In Matthew 16:26, gaining the world forfeits the soul — 18:9 says losing an eye is better than losing the whole body in hell — both value eternity over temporary gain.

Matthew 5:22 also warns of 'hell of fire' — showing this is a consistent theme in Jesus' teaching on anger and sin.

Matthew 5:29 contains the same teaching about tearing out an eye that causes sin — a parallel version of this saying.

In Luke 9:24, losing life saves it — 18:9 says losing an eye saves the body from hell — both teach sacrifice for eternal gain.

In Luke 9:25, losing oneself is worse than losing the world — 18:9 says losing a part is better than being thrown into hell — both weigh eternal loss against temporal gain.

In Revelation 21:27, nothing unclean enters heaven — 18:9 warns that sin leads to hell — both require purity for eternal life.

Mark 9:43 parallels this with the hand — the same radical cut-off-sin teaching in another gospel.

Proverbs 23:2 uses hyperbolic 'knife to throat' for self-control — a parallel to Jesus' 'tear out eye' for avoiding sin.