In Isaiah 27:9, Jacob's guilt is atoned for and sin removed—a direct OT parallel to the forgiveness promise in Romans.

In Isaiah 43:25, God blots out transgressions and remembers sins no more—the same theme of sin removal Paul invokes.

Isaiah 59:21 is the exact OT source Paul quotes here — God's covenant that His Spirit and words will remain with Israel forever.

Jeremiah 31:31-34 promises a new covenant with full forgiveness of sins — directly reflected in Romans 11:27's covenant to take away Israel's sins.

In Jeremiah 50:20, iniquity is sought and not found because God pardons the remnant—matching the taking away of sins.

In Ezekiel 36:25-29, God cleanses from uncleanness, gives a new heart, and saves—directly parallel to the covenant of sin removal.

In John 1:29, Jesus is the Lamb of God who takes away the sin of the world—the NT fulfillment of the covenant promise.

In Hebrews 8:8-12, the new covenant promise quotes Jeremiah 31: 'I will remember their sins no more'—the exact text behind Romans 11:27.

In Isaiah 59:20, the Redeemer comes to Zion and removes sins—this is the very prophecy Paul quotes in Romans 11:27, forming a direct citation.

In Jeremiah 31:34, God promises to forgive iniquity and remember sins no more—this new covenant language directly parallels the sin‑removal promise in Romans 11:27.

In Acts 5:31, Jesus gives repentance and forgiveness to Israel—a direct parallel to the covenant sin‑removal in Romans 11:27, now linked to Christ's exaltation.

Hebrews 8:12 echoes the same new covenant promise of sins forgiven — God remembers them no more, just as Romans 11:27 says He takes away their sins.

Hebrews 10:4 contrasts animal sacrifices’ inability to remove sins with the new covenant promise in Romans 11:27 that God will take away sins.

Isaiah 55:3 promises an everlasting covenant of steadfast love — parallel to the covenant in Romans 11:27 where God takes away sins.

In Luke 24:47, repentance and forgiveness are proclaimed to all nations—broadening the scope of sin removal from Israel (Romans 11:27) to the whole world.

In Titus 2:14, Christ redeems from lawlessness and purifies a people—echoing the purification of Israel in Romans 11:27 but applied to a general redeemed community.