Jeremiah 17:10 in the King James Version
I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings.
Context
9 The heart is deceitful above all things and it is exceedingly corrupt. Who can know it?
10 “I, the LORD, search the mind. I try the heart, even to give every man according to his ways, according to the fruit of his doings.”
11 As the partridge that sits on eggs which she has not laid, so is he who gets riches, and not by right. In the middle of his days, they will leave him. At his end, he will be a fool.