What is the difference between Christianity and Judaism?

Righteousness and the Law

Christ fulfills what human effort could never accomplish

Christ is the culmination of the law so that there may be righteousness for everyone who believes.

Romans 10:4 (NIV)

It declares plainly that the goal and termination of the law for righteousness is achieved exclusively through faith in Christ.

Paul identifies the precise dividing line in Romans 10:4: Christ is the end of the law for righteousness to everyone who believes. While traditional Judaism seeks divine favor through keeping the Mosaic commandments, Scripture insists that fallen humanity cannot establish its own standing before God. Paul observes in Romans 10:1-3 that Israel pursued righteousness with immense zeal, yet missed it entirely by refusing to submit to the righteousness that comes from God.

Jesus did not come to discard the moral and prophetic framework of the Old Testament, but rather declared in Matthew 5:17-18 that He came to fulfill every stroke and letter. Because no fallen sinner can keep that standard perfectly, Galatians 2:16 rules out legal works entirely: a person is justified by faith in Jesus Christ alone. The Mosaic commandments functioned as a schoolmaster or guardian, as Galatians 3:24-25 explains, exposing our inability and leading us directly to Christ so that we might be declared righteous through faith. Romans 3:20-22 confirms that by deeds of the law no flesh will be justified in God's sight, because the law brings the knowledge of sin, while God's true righteousness is received apart from legal performance through faith in Jesus.

In Antioch, Paul preached in Acts 13:38-39 that through this Savior forgiveness of sins is proclaimed, freeing believers from every condemnation from which the law of Moses could never clear them. God executed what the law was powerless to achieve because it was weakened by the sinful nature: as Romans 8:3-4 shows, He sent His own Son in the likeness of sinful flesh as an offering for sin to condemn sin in the flesh. Consequently, Paul renounces every pedigree, pedigree badge, and legal achievement in Philippians 3:8-9, counting all human heritage as loss so that he may be found in Christ, possessing not a righteousness derived from the law, but that which is through faith in Christ.

Atonement and Temple

The once-for-all sacrifice replaces shadows and repeated offerings

The law is only a shadow of the good things that are coming—not the realities themselves. For this reason it can never, by the same sacrifices repeated endlessly year after year, make perfect those who draw near to worship. Otherwise, would they not have stopped being offered? For the worshipers would have been cleansed once for all, and would no longer have felt guilty for their sins. But those sacrifices are an annual reminder of sins. It is impossible for the blood of bulls and goats to take away sins.

Hebrews 10:1-4 (NIV)

It demonstrates that repeated animal sacrifices could never remove sin, functioning instead as a shadow pointing to Jesus.

The essential division regarding worship and forgiveness centers on Hebrews 10:1-4: the law can never, by the same sacrifices repeated endlessly year after year, make perfect those who draw near to worship. Leviticus 16:30 prescribed the solemn Day of Atonement, where an annual cleansing was made for Israel's sins before the Lord through priestly animal blood; yet this shadow found its ultimate reality when Christ entered the heavenly sanctuary once for all with His own blood, obtaining eternal redemption (Hebrews 9:11-12, Hebrews 9:24-26).

Under the old economy, Leviticus 17:11 established that the life of the flesh is in the blood, given upon the altar to make atonement; this vital principle pointed directly to Jesus shedding His blood for the remission of sins, as proclaimed at the Last Supper in Matthew 26:28 and confirmed in 1 John 1:7. Animal blood merely covered sin temporarily, but Hebrews 10:1-4 explains that the repeated sacrifices served as an annual reminder of guilt, unable to cleanse consciences until Christ offered Himself once for all time (Hebrews 10:10-14). Hebrews 9:24-26 emphasizes that Jesus did not enter an earthly sanctuary made by human hands, but entered heaven itself to put away sin permanently by the sacrifice of Himself.

This dramatic reality was foretold in Isaiah 53:10-11, where Yahweh made the soul of His righteous Servant an offering for sin, bearing human iniquities to justify many. Because Christ is holy, innocent, and unstained, Hebrews 7:26-27 records that He has no need of daily offerings like the Levitical priests; He offered Himself once for all. Therefore, Hebrews 13:10-12 announces that Christians possess an altar from which those who serve the earthly tent have no right to eat, for Jesus suffered outside the city gate to sanctify the people with His own blood.

The Two Covenants

God promised an everlasting covenant written on the heart

“The days are coming,” declares the LORD, “when I will make a new covenant with the people of Israel and with the people of Judah. It will not be like the covenant I made with their ancestors when I took them by the hand to lead them out of Egypt, because they broke my covenant, though I was a husband to them,” declares the LORD. “This is the covenant I will make with the people of Israel after that time,” declares the LORD. “I will put my law in their minds and write it on their hearts. I will be their God, and they will be my people. No longer will they teach their neighbor, or say to one another, ‘Know the LORD,’ because they will all know me, from the least of them to the greatest,”…

Jeremiah 31:31-34 (NIV)

God explicitly prophesied a new covenant distinct from Sinai that would provide internal transformation and complete forgiveness.

At Mount Sinai, God inaugurated a national covenant sealed with blood, as recorded in Exodus 24:7-8, where Moses sprinkled animal blood upon the altar and the people to bind them to obedience; yet centuries later, the Lord announced through Jeremiah 31:31-34 that He would make a new covenant with the house of Israel and the house of Judah, not like the covenant made with their fathers. This promised covenant was formally instituted by Christ when He raised the cup in Luke 22:20, declaring it to be the new covenant poured out in His blood for the remission of sins.

Where the Sinaitic agreement was carved on cold tablets of stone, Ezekiel 36:26-27 foretold an internal work of grace in which God removes the heart of stone, gives a heart of flesh, and puts His Holy Spirit within His people to cause them to walk in His statutes, fulfilled through the ministry of the Spirit in 2 Corinthians 3:3-6. The author of Hebrews 8:6-13 cites Jeremiah's oracle in full, concluding that Jesus mediates a far superior covenant enacted on better promises, rendering the prior Mosaic administration obsolete and aging away.

Paul draws out this profound theological contrast in Galatians 4:21-26, using an allegory of two sons to distinguish between Mount Sinai, which bears children for slavery under legal obligation, and the heavenly Jerusalem, which is free and the mother of all believers. Finally, Hebrews 12:22-24 shows the believer's true destination: we have not come to a terrifying, quaking earthly mountain burning with fire, but to Mount Zion, the heavenly Jerusalem, and to Jesus, the mediator of a new covenant whose sprinkled blood speaks a better, more gracious word than the blood of Abel.

The Person of Messiah

Jesus of Nazareth claims the exclusive title of Son

Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me.

John 14:6 (NIV)

Jesus claims an exclusive mediator role that prevents any approach to the Father through the law or human tradition alone.

The deepest chasm between the two faiths lies in the person and identity of Jesus of Nazareth, who declared in John 14:6: I am the way, and the truth, and the life; no one comes to the Father except through Me. Judaism honors Moses and the prophets while looking for a merely human political or military deliverer; Jesus, however, rebuked the religious authorities in John 5:39-40, warning that although they diligently searched the Scriptures thinking they possessed eternal life in them, those very texts testified of Him, yet they refused to come to Him for life.

Peter boldly testified before the Jerusalem council in Acts 4:12 that there is salvation in no one else, for there is no other name under heaven given among men by which we must be saved. Scripture permits no alternate route to God: 1 Timothy 2:5 affirms there is one God and one mediator between God and men, the man Christ Jesus. To reject Jesus is to forfeit relationship with the Creator, for 1 John 2:22-23 defines as an antichrist anyone who denies the Son, declaring plainly that whoever denies the Son does not have the Father.

Psalm 110:1 pointed to this transcendent reality when David addressed the Messiah as his Lord, a mystery Jesus invoked to reveal His divine supremacy. When Simon Peter declared in Matthew 16:16-17, 'You are the Christ, the Son of the living God,' Jesus affirmed that this truth was revealed directly by the Father in heaven. Jesus further claimed the eternal covenant name of God in John 8:58 by announcing, 'Before Abraham was, I am.' While 1 Corinthians 1:22-24 acknowledges that Jews demand miraculous signs and find a crucified Messiah an offensive stumbling block, Christ remains the power and wisdom of God to all who are called.

The Early Apostolic Church

Grace unites Jew and Gentile apart from circumcision

Now then, why do you try to test God by putting on the necks of Gentiles a yoke that neither we nor our ancestors have been able to bear? No! We believe it is through the grace of our Lord Jesus that we are saved, just as they are.”

Acts 15:10-11 (NIV)

The Jerusalem council officially concluded that salvation is through the grace of the Lord Jesus, not Mosaic observance.

In Acts 15:10-11, the apostle Peter confronted the defining theological question of the apostolic era, declaring that neither Israel nor their fathers could bear the yoke of the law, but that salvation comes entirely through the grace of the Lord Jesus Christ. The crisis began when certain men insisted that Gentile believers must be circumcised to be saved (Acts 15:1-2), threatening to reduce the new covenant to ethnic boundary markers. Instead, the apostles recognized that the gospel had shattered ancient divisions. As the apostle Paul explains in Ephesians 2:14-16, Christ broke down the dividing wall of hostility, reconciling both Jew and Gentile to God in one body through the cross, abolishing the enmity contained in legal ordinances. This rupture within Israel caused intense grief; Paul openly mourned over his biological kinsmen (Romans 9:1-5), who possessed the adoption, the glory, the covenants, and the ancestral lineage of the Messiah, yet stumbled over Christ who is God over all. In pastoral mission, Paul accommodated his personal liberty (1 Corinthians 9:20-22), becoming as one under the law to win those under the law, while remaining captive to the law of Christ. The definitive status of the believer is not marked by the flesh: in Christ Jesus, there is neither Jew nor Greek, for all who belong to Him are Abraham's offspring and heirs according to promise (Galatians 3:28-29). Physical circumcision counts for nothing, but only faith working through love (Galatians 5:6). Yet God has not discarded His covenant promises; Gentiles are wild branches grafted in among the natural branches by faith (Romans 11:17-21), while a partial hardening rests upon ethnic Israel until the fullness of the Gentiles comes in, after which God's ancient promise will culminate in the salvation of all Israel (Romans 11:25-27).

Authority and Tradition

Scripture alone stands as the inspired standard over human traditions

Thus you nullify the word of God by your tradition that you have handed down. And you do many things like that.”

Mark 7:13 (NIV)

Jesus clarifies the contrast between the authoritative divine commandment and man-made oral tradition.

In Mark 7:13, the Lord Jesus strikes at the root of legalistic religion, declaring that the religious leaders were making void the word of God through their tradition which they had handed down. While post-biblical Judaism came to elevate the rabbinic oral Torah—later codified in the Mishnah and Talmud—as authoritative commentary equal or complementary to the written Scriptures, Christ drew a sharp, non-negotiable line between divine revelation and human fencing. In Matthew 15:1-9, He confronted the scribes and Pharisees, quoting the prophet Isaiah to show that teaching human precepts as doctrines leads to hypocritical and vain worship. By erecting complex oral strictures, the religious establishment ended up setting aside the clear commandment of God in order to preserve their own ancestral rulings. This distortion inverted divine priorities; as Jesus warned in Matthew 23:23, they scrupulously tithed tiny garden herbs like mint, anise, and cumin, while completely neglecting the weightier matters of the law: justice, mercy, and faithfulness. Paul had known this system from the inside out; reflecting on his former life in Galatians 1:13-14, he testified that he had violently persecuted the church of God and outstripped his contemporaries precisely because he was extraordinarily zealous for the traditions of his fathers. The gospel overturned this ancestral pride, submitting all human authority and human tradition entirely to the pure, inerrant, and final authority of God's revealed Word.

Where in the Bible

The story in order

1. Abraham called by God (c. 2000 BC) · Genesis 12:1-3 · God establishes a covenant with Abraham, promising descendants and blessing.
2. Moses and the Law given (c. 1450 BC) · Exodus 20:1-17 · God gives the Mosaic Law, outlining His commands for Israel.
3. Davidic Kingdom established (c. 1000 BC) · 2 Samuel 7:11-16 · God promises an everlasting dynasty through David.
4. Jeremiah prophesies New Covenant (c. 600 BC) · Jeremiah 31:31-34 · God foretells a new covenant written on the heart.
5. Isaiah foretells Suffering Servant (c. 700 BC) · Isaiah 53:1-12 · Prophecy of a servant who bears iniquities for the people.
6. Jesus' Ministry Begins (AD 28) · Matthew 4:17 · Jesus proclaims the kingdom of God and calls for repentance.
7. Jesus fulfills the Law (AD 30) · Matthew 5:17-18 · Jesus affirms He came to fulfill, not abolish, the Law.
8. Jesus' Atoning Sacrifice (AD 30) · Hebrews 9:11-12 · Christ's blood achieves eternal redemption, superior to animal sacrifices.
9. New Covenant Instituted (AD 30) · Luke 22:20 · Jesus declares the cup to be the new covenant in His blood.
10. Peter's Sermon at Pentecost (AD 30) · Acts 2:14-36 · Peter proclaims Jesus as Messiah, Lord, and Christ.
11. Council of Jerusalem (AD 50) · Acts 15:1-21 · Decides Gentiles do not need to follow Mosaic law for salvation.
12. Paul's Epistles (AD 55-65) · Romans 3:20-22 · Explains righteousness comes through faith in Christ, not law.
13. Hebrew's Argument for Christ (AD 65-70) · Hebrews 8:6-13 · Contrasts the old and new covenants, highlighting Christ's superiority.

The Law and Christ's Fulfillment

Shadows of the Old Covenant Replaced by Christ

The Two Covenants

Key words

Righteousness (dikaiosunē, δικαιοσύνη)

The quality of being right with God, either through God's imputation or personal obedience. · Romans 3:20-22

Law (nomos, νόμος)

The Mosaic Law, given by God to Israel, encompassing commandments, statutes, and ordinances. · Galatians 3:24-25

Atonement (kipur, כִּפּוּר)

The act of making amends or reparation for sin, often through sacrifice. · Leviticus 16:30

Covenant (berit, בְּרִית)

A solemn agreement or promise between God and humanity, or between individuals. · Jeremiah 31:31-34

Messiah (mashiach, מָשִׁיחַ)

The 'Anointed One,' a divinely appointed deliverer and king prophesied in the Old Testament. · Psalms 110:1

Faith (pistis, πίστις)

Trust and belief in God and His promises, particularly in Jesus Christ for salvation. · Galatians 2:16

Salvation (sōtēria, σωτηρία)

Deliverance from sin and its consequences, leading to eternal life with God. · Acts 4:12