In Ephesians 5:9, truth is part of the fruit of light—connecting the belt of truth to living as children of light.

Isaiah 11:5 describes the Messiah's belt of righteousness and faithfulness—the same imagery Paul adapts for the believer's belt of truth.

Isaiah 59:17 is the direct source: God puts on righteousness as a breastplate and helmet of salvation—the same armor pieces.

In Luke 12:35, 'let your loins be girded' is the same readiness imagery—waiting for the master's return.

2 Corinthians 6:7 pairs 'word of truth' and 'weapons of righteousness'—the same dual imagery of truth and righteousness as armor.

1 Peter 1:13 uses 'gird up the loins of your mind'—the same mental preparedness symbolized by the belt.

Job 29:14 says 'I put on righteousness' — a direct parallel to the breastplate of righteousness, using the same metaphor of righteousness as clothing.

1 Thessalonians 5:8 also uses the breastplate image, but of faith and love—showing Paul's flexible use of the armor metaphor.