Luke 19:8 shows Zacchaeus repaying fourfold—a concrete example of the repentance John called for in verse 13.

Micah 6:8 commands doing justice and loving kindness, directly supporting John's instruction for tax collectors to act justly.

Matthew 7:12's Golden Rule—treat others as you wish—reinforces John's demand for fair dealing with taxpayers.

Exodus 20:15 is the foundational command against stealing that underlies John's instruction to tax collectors.

Leviticus 19:13 prohibits oppression and robbing, directly paralleling the command not to extort more than appointed.

Nehemiah 5:10 calls for ceasing exploitative interest, reflecting the same principle of fair financial dealings.

Ezekiel 22:12 directly condemns extortion and greed, the very sins John warns the tax collectors against.

Ephesians 4:28 calls for honest labor and sharing, echoing the same ethic of not taking more than earned.