Colossians 1:20 is the immediate larger context — cosmic reconciliation through Christ's blood, which then applies personally in verse 21.

Titus 3:3-7 echoes the 'once were' foolish and disobedient, then saved by mercy — the same before-and-after pattern of reconciliation.

Romans 5:9 shows justification by Christ's blood — the solution that reverses the alienation and hostility in Colossians 1:21.

Romans 5:10 directly parallels the language of enemies reconciled by Christ's death, mirroring the former hostility in Colossians 1:21.

Romans 8:7 uses the same word 'hostile' to describe the fleshly mind, directly echoing the hostility mentioned in Colossians 1:21.

Ephesians 4:18 describes the 'alienated from the life of God' state that Colossians 1:21 refers to, showing darkened understanding.

1 Corinthians 6:9-11 lists sinners and says 'such were some of you' — a direct parallel to the 'you once were' in Colossians 1:21.

In Ephesians 2:19, the same transition from alienation to belonging is described: from 'strangers and foreigners' to 'fellow citizens' — expanding on the reconciliation here.

Ephesians 2:1 uses the same 'you were dead' language to describe the former state of alienation, paralleling Colossians 1:21.

Ephesians 2:2 expands on the former way of life — walking in the world's pattern — mirroring the evil deeds in Colossians 1:21.

Ephesians 2:12 says believers were 'alienated' from God's people — directly matching the alienation in Colossians 1:21.

1 Peter 3:18 directly parallels: Christ suffered to bring us to God — the same reconciling work through his death.

2 Chronicles 29:24 has a sin offering making atonement for all Israel — prefiguring the universal reconciliation in Christ.

Ephesians 2:13 uses the same 'far off/brought near' contrast — the blood of Christ is what brings reconciliation.

2 Corinthians 5:18 explains that God reconciles us through Christ — the very solution to the alienation described here.

Romans 12:2 commands a renewed mind — directly opposing the hostile mind mentioned in this verse.

Romans 11:15 speaks of reconciliation of the world through rejection — a broader parallel to the personal reconciliation implied here.

Ezekiel 14:5 also describes estrangement from God through idols — a direct parallel to the alienation and hostile mind mentioned here.

Isaiah 27:5 calls for making peace with God — directly relating to the peace achieved through reconciliation in this verse.

James 4:4 defines enmity with God as friendship with the world — explaining the 'enemies in mind' from this verse.

Ephesians 2:16 broadens the reconciliation to include Jew and Gentile being one body through the cross, killing hostility.

Titus 1:15 speaks of a defiled mind and conscience — echoing the 'alienated in mind' state of those not reconciled.

Titus 1:16 describes those who deny God by their works — illustrating the 'wicked works' that characterized the unreconciled.