Matthew 5:22 is another 'but I tell you' antithesis, intensifying the law on anger — same pattern as the oath teaching.

Matthew 23:16-22 expands on this, condemning those who swear by heaven and deceive, showing the folly of such oaths.

Matthew 23:22 explains that swearing by heaven swears by God's throne — reinforcing Jesus' point that all oaths involve God.

Matthew 26:72 shows Peter swearing an oath to deny Jesus — an ironic violation of Jesus' command not to swear.

Deuteronomy 23:21-23 commands fulfilling vows to God — the OT law Jesus contrasts with his prohibition of all oaths.

Isaiah 66:1 declares heaven is God's throne, the very reason Jesus gives for not swearing by heaven.

James 5:12 echoes this command, telling believers not to swear by heaven or earth, reinforcing the same prohibition.

Leviticus 19:12 forbids false oaths by God's name; Jesus goes further by prohibiting all swearing.

Numbers 30:2 requires keeping vows made to the Lord; Jesus here prohibits making oaths altogether.

Deuteronomy 5:11 prohibits misusing God's name; this underlies Jesus' teaching to avoid all oaths.

Psalm 11:4 affirms that God's throne is in heaven, providing scriptural support for Jesus' statement.

Acts 7:49 quotes Isaiah 66:1 with 'heaven my throne, earth my footstool' — the same phrase Jesus uses to ground his teaching.

Acts 17:24 declares God as Lord of heaven and earth — the theological basis for why oaths by these things invoke God.

Mark 6:23 portrays Herod's rash oath leading to John's execution — illustrating the danger of swearing Jesus warns against.