'Searcher' in the Bible

And you, Solomon my son, get knowledge of the God of your father, and be his servant with a true heart and with a strong desire, for the Lord is the searcher of all hearts, and has knowledge of all the designs of men's thoughts; if you make search for him, he will be near you; but if you are turned away from him, he will give you up for ever.

And I am conscious, my God, that you are the searcher of hearts, taking pleasure in righteousness. As for me, with an upright heart I have freely given all these things; and I have seen with joy your people who are here to make their offerings freely to you.

I the Lord am the searcher of the heart, the tester of the thoughts, so that I may give to every man the reward of his ways, in keeping with the fruit of his doings.