1 Samuel 13:14-"But now your kingdom shall not continue. The Lord has sought out a man after his own heart, and the Lord has commanded him to be prince over his people, because you have not kept what the Lord commanded you.”

1 Samuel 14:7 And his armor-bearer said to him, “Do all that is in your heart. Do as you wish. Behold, I am with you heart and soul.”

1 Samuel 15:22 And Samuel said,
“Has the Lord as great delight in burnt offerings and sacrifices, as in obeying the voice of the Lord?
Behold, to obey is better than sacrifice, and to listen than the fat of rams."

1 Samuel 16:7 But the Lord said to Samuel, “Do not look on his appearance or on the height of his stature, because I have rejected him. For the Lord sees not as man sees: man looks on the outward appearance, but the Lord looks on the heart.”