Genesis 42:15, 16, 20
And this is how you will be tested: As surely as Pharaoh lives, you shall not leave this place unless your youngest brother comes here. . . .

Genesis 43:32
They served Joseph's brothers separately from him and the Egyptians who ate with him, because Egyptians would not eat with Hebrews, since that was detestable to them.

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.

Matthew 10:16
Look, I am sending you out like sheep among wolves; therefore be as shrewd as snakes and as innocent as doves.

2 Corinthians 8:8
I am not making a demand, but I am testing the sincerity of your love in comparison to the earnestness of others.