Galatians 2:14 shows Paul rebuking Peter for not walking in step with gospel truth — the opposite of the walking in truth rejoiced over here.

In 1 Thessalonians 3:6-10, Paul rejoices over the Thessalonians' faith and love, just as John rejoices over walking in truth — both reflect joy in others' spiritual progress.

1 John 1:6 warns that claiming fellowship while walking in darkness is lying — the opposite of walking in truth here.

3 John 1:3 contains the identical phrase 'rejoiced greatly' and 'walking in the truth' — a direct parallel between the two Johannine letters.

3 John 1:4 says 'no greater joy than to hear my children walk in truth' — the same theme and wording as John's joy here.

Proverbs 23:15 directly mirrors John's joy: a father rejoices when his son is wise, just as John rejoices over children walking in truth.

Proverbs 27:11 has the same parental joy: 'make my heart glad' by being wise—reflecting John's rejoicing over truth-walking children.

1 Corinthians 13:6 says love 'rejoiceth in the truth'—the exact phrase that captures John's joy over children walking in truth.

Psalm 119:30 speaks of choosing the way of truth—the same 'walking in truth' that John celebrates, linking personal devotion to God's commands.

1 John 2:6 calls believers to walk as Jesus walked — the standard of truth that the children here are commended for following.

Psalm 26:3 says 'I walk in your faithfulness' — closely akin to walking in truth, both living according to God's character.

Romans 6:17 thanks God for obedience from the heart to doctrine—paralleling John's theme of faithful obedience to the Father's commandment.

1 Thessalonians 2:19 calls believers the apostle's hope and joy; John's joy over children walking in truth echoes this pastoral delight.

1 Thessalonians 2:20 directly says 'you are our glory and joy' — similar to John's joy in the faithful, though here it's about the whole church.