'He Who Searches' in the Bible

He who diligently seeks good seeks favor and grace,But he who seeks evil, evil will come to him.

The lamp of Yahweh [is] the spirit of humankind, he who searches every {innermost part}.

If you say, Behold, we did not know; does not He who searches the heart consider it? And the Keeper of your soul, does He know? And He repays to a man according to his works.