Matthew 20:15 uses the same phrase 'evil eye' (ophthalmos ponēros) to mean envy — reinforcing the idiom that links moral corruption with faulty vision.

Matthew 23:16-28 condemns Pharisees whose inner darkness belies outward light—the hypocrisy Jesus warns against.

In Luke 8:10, Jesus explains that some see yet do not perceive — their supposed light is actually darkness, just as in this verse.

In Revelation 3:18, Christ offers eye salve to heal spiritual blindness — the very cure for the darkness described in Matthew 6:23.

Revelation 3:17 describes the Laodicean church as blind and wretched, unaware of their true state — the same spiritual blindness Jesus warns about in Matthew 6:23.

1 John 2:11 says hatred blinds the eyes—the same blindness Jesus warns about when the inner light is dark.

Ephesians 4:18 describes darkened understanding and hardened heart—the condition when inner light becomes darkness.

In 1 Corinthians 3:18, thinking yourself wise by worldly standards is self-deception — the light you think you have is darkness.

In Romans 2:17-23, those who boast in the law yet break it have light that is darkness — their knowledge does not transform them.

In Romans 1:22, claiming to be wise while becoming fools is the same self-deception as having light that is actually darkness.

In John 9:39-41, Jesus says those who claim to see are blind — their light is darkness, exactly the paradox of a dark 'light within'.

In Jeremiah 8:9, rejecting God's word exposes their wisdom as shameful delusion — mirroring the internal darkness of a 'bad eye'.

In Jeremiah 8:8, the scribes' false handling of the law makes their claimed wisdom actually darkness — the same 'light within you is darkness' theme.

Isaiah 5:20 pronounces woe on those who call darkness light—the same reversal when one's light is actually darkness.

Luke 11:34 is the parallel account of the same teaching — the eye as lamp of the body, healthy or unhealthy, directly echoing Matthew 6:23.

In Acts 26:18, opening eyes from darkness to light parallels the 'bad eye' causing darkness — both describe spiritual blindness and the need for illumination.

Mark 7:22 lists 'evil eye' among inner evils—the same corruption that makes the body dark.

Genesis 3:5 promises 'eyes opened' like God — but that supposed enlightenment actually brought spiritual darkness, ironic contrast to Matthew 6:23's warning.

John 1:9 presents Christ as the true light that enlightens everyone — the source of the light that the unhealthy eye in Matthew 6:23 lacks.

Isaiah 8:20 says rejecting God's word leaves no light—the source of darkness when the inner eye is bad.

Ephesians 5:8 contrasts former darkness with present light—opposite of the warning that light may be darkness.

Isaiah 44:18 describes eyes shut so they cannot see — a parallel to the darkened body from an evil eye in Matthew, both depicting spiritual blindness.

Isaiah 5:21 warns those wise in their own eyes—a blindness parallel to thinking one's darkness is light.

Ecclesiastes 2:13 uses light/darkness as metaphor for wisdom vs folly — paralleling the spiritual light/darkness imagery in Matthew 6:23.

Proverbs 26:12 warns against being wise in one's own eyes—self-deception that mistakes darkness for light.