prove.

Genesis 22:1
Some time later God tested Abraham and said to him, "Abraham!" "Here I am, " he answered.

Deuteronomy 8:2, 16
Remember that these forty years the LORD your God led you all the way in the wilderness, so that He might humble you and test you in order to know what was in your heart, whether or not you would keep His commandments. . . .

Deuteronomy 13:3
you must not listen to the words of that prophet or dreamer. For the LORD your God is testing you to find out whether you love Him with all your heart and with all your soul.

Deuteronomy 33:8
Concerning Levi he said: "Give Your Thummim to Levi and Your Urim to Your godly one, whom You tested at Massah and contested at the waters of Meribah.

2 Chronicles 32:31
And so when ambassadors of the rulers of Babylon were sent to him to inquire about the wonder that had happened in the land, God left him alone to test him, that He might know all that was in Hezekiah's heart.