Psalms 7:9

"But, O LORD of hosts, that judgest righteously, that triest the reins and the heart, let me see thy vengeance on them: for unto thee have I revealed my cause."

"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."

"But, O LORD of hosts, that triest the righteous, and seest the reins and the heart, let me see thy vengeance on them: for unto thee have I opened my cause."

"And thou, Solomon my son, know thou the God of thy father, and serve him with a perfect heart and with a willing mind: for the LORD searcheth all hearts, and understandeth all the imaginations of the thoughts: if thou seek him, he will be found of thee; but if thou forsake him, he will cast thee off for ever."

"But the LORD said unto Samuel, Look not on his countenance, or on the height of his stature; because I have refused him: for the LORD seeth not as man seeth; for man looketh on the outward appearance, but the LORD looketh on the heart. outward...: Heb. eyes"

"Examine me, O LORD, and prove me; try my reins and my heart."

"Break thou the arm of the wicked and the evil man: seek out his wickedness till thou find none."

"Shall not God search this out? for he knoweth the secrets of the heart."

"And I will kill her children with death; and all the churches shall know that I am he which searcheth the reins and hearts: and I will give unto every one of you according to your works."

"The LORD trieth the righteous: but the wicked and him that loveth violence his soul hateth."