4 Bible Verses about God Knowing the Human Heart

And I will strike her children dead [or, "kill her children by some terrible calamity" See Ex. 5:3 LXX]. Then all the churches will know that I am the One who searches the inmost being of people [Note: The Greek says, "searches the kidneys and hearts." In that day these internal organs stood for the inner thoughts, emotions, etc.]. And I will repay each one of you people according to what you have done.

Knowing what they were thinking, Jesus said, "Why are you having such evil thoughts in your minds?

And immediately Jesus perceived in His spirit what they were reasoning in their minds and said to them, "Why are you reasoning like this in your minds?

But Jesus perceived their reasonings and answered them, "Why are you reasoning in your hearts?