Ezekiel 11:5
And the Spirit of the LORD fell upon me, and said unto me, Speak; Thus saith the LORD; Thus have ye said, O house of Israel: for I know the things that come into your mind, every one of them. And the Spirit of the LORD fell upon me, and said unto me, Speak; Thus saith the LORD; Thus have ye said, O house of Israel: for I know the things that come into your mind, every one of them.
The Lord knows every thought that comes into a person's mind. He knows the thoughts of the heart, every one of them. No inward intention is hidden from Him, and nothing within is concealed from His sight.
His knowledge is not limited to outward actions but reaches to the inward thoughts and intentions of the heart. His understanding of human minds, and of how people will respond to circumstances and temptation, is exact and infallible. The declaration stands as a warning to those who follow the imagination of their evil hearts and resist His instruction.