Psalm 40:10 says 'I have not hidden your deliverance' — directly matching the idea in Mark 4:22 that nothing hidden remains secret.

Psalm 78:2-4 promises not to hide dark sayings from children — Jesus fulfills this by revealing hidden truths in parables.

In Ecclesiastes 12:14, God will judge every hidden deed — the same truth that hidden things will be exposed.

In Matthew 10:26, Jesus repeats this principle to encourage fearless witness — nothing concealed will remain hidden.

In Matthew 10:27, the implication follows: speak openly what you hear in secret — apply the revelation principle.

In Luke 8:17, this is the parallel account in the lamp parable — hidden things become evident.

In Luke 12:2, Jesus uses this truth to warn against hypocrisy — everything covered will be uncovered.

In Luke 12:3, secret words will be proclaimed publicly — extending the warning to speech.

In 1 Corinthians 4:5, the Lord will bring hidden things to light at his coming — the eschatological application.

Luke 8:16 uses the lamp metaphor to emphasize that hidden things are meant to be revealed, reinforcing the same principle.

Luke 11:33 repeats the lamp saying, underscoring that nothing remains secret forever; all will come to light.