Psalm 139 extensively describes God's intimate knowledge of every thought and action — expanding on the claim here that God knows the secrets of the heart.

Psalm 7:9 explicitly states God tests minds and hearts — the same truth that God knows hidden secrets.

Psalm 11:4 describes God's eyes testing all people — reinforcing that nothing is hidden from Him.

Psalm 33:15 says God fashions hearts and observes all deeds — directly related to His knowledge of inner secrets.

Psalm 69:5 confesses that God knows all wrongs — a direct parallel to God knowing the secrets of the heart.

Psalm 73:11 records the wicked doubting God's knowledge — contrasting with the certainty that God knows secrets.

Psalm 94:9 argues that the Creator of ears and eyes certainly hears and sees — supporting that God knows all secrets.

Psalm 119:168 states that all one's ways are before God — a parallel to His knowledge of hidden heart secrets.

Joshua 22:22 echoes that God knows the truth of intentions, as the speakers call on Him to witness their innocence.

Revelation 2:23 proclaims that Christ searches mind and heart, giving to each according to their works.

Hebrews 4:13 states that no creature is hidden from God's sight, all are exposed to Him, reinforcing the omniscience theme.

Hebrews 4:12 describes God's word discerning the thoughts and intentions of the heart, a parallel to God knowing secrets.

1 Corinthians 4:5 says the Lord will disclose the purposes of the heart, bringing hidden things to light.

Romans 2:16 declares that God judges the secrets of men by Christ Jesus, echoing the same truth about divine knowledge.

Jeremiah 17:10 similarly declares that God searches the heart and tests the mind to reward each according to their deeds.

Ecclesiastes 12:14 states that God will judge every secret thing, whether good or evil, directly paralleling the heart-knowing theme.

Acts 1:24 explicitly prays to the Lord who knows the hearts of all — a direct NT affirmation of the same attribute.

In Genesis 18:15, God confronts Sarah's denial of laughter, showing He knows her secret thought.

1 John 3:20 expands on God's omniscience: He knows everything, even when our hearts condemn us — reinforcing the Psalm's claim that God discovers hidden things.

1 Samuel 2:3 declares God knows all actions and weighs them, reinforcing that He discerns secrets.

Job 12:22 says God uncovers deep darkness, revealing hidden things — a clear parallel to knowing secrets.

Job 13:9 warns that God searches you out and cannot be deceived, echoing that He knows hearts.

Romans 8:27 describes God as the one who searches hearts — the same divine activity of knowing inner secrets.

Acts 15:8 states God knows the heart, bearing witness by giving the Spirit — confirming God's intimate knowledge.

Proverbs 15:11 says even Sheol is open to God, much more human hearts — directly affirming that God knows heart secrets.

Luke 6:8 records Jesus knowing the thoughts of the Pharisees — another instance of divine heart-knowledge in action.

Matthew 9:4 shows Jesus knowing evil thoughts — a direct NT example of God's knowledge of the heart's secrets.

Jeremiah 12:3 shows Jeremiah appealing to God's knowledge of his heart — a personal application of God knowing secrets.

Proverbs 24:12 echoes that God weighs the heart and repays — reinforcing the same truth that God knows hidden motives.

Job 31:4 affirms that God sees all one's ways — reinforcing the idea that God knows the secrets of the heart here.

Jeremiah 23:24 affirms that no one can hide from God's sight, reinforcing the theme that God discovers all secrets.

In 1 Thessalonians 2:4, Paul affirms that God tests hearts — echoing the Psalmist's confidence that God knows the secrets of the heart.

Job 34:21 states that God's eyes are on all a man's ways — supporting the claim here that God knows the secrets of the heart.

Job 34:22 declares that no darkness can hide from God — illustrating the truth here that God knows the secrets of the heart.

Matthew 6:4 speaks of the Father seeing in secret — a related but distinct idea of God observing hidden acts, not just heart secrets.