Send one of your number to get your brother, and the rest of you will be kept in prison, so that your words may be tested to see if you are true; if not, by the life of Pharaoh, your purpose is certainly secret.
And come back to me with your youngest brother, so that your words may be seen to be true, and you will not be put to death. This is what you are to do.
And come back to me with your youngest brother: then I will be certain that you are true men, and I will give your brother back to you and let you do trade in the land.
And when Joseph saw his brothers, it was clear to him who they were, but he made himself strange to them, and talking roughly to them, said, Where do you come from? And they said, From the land of Canaan, to get food.
How is it possible for you to have my forgiveness for this? your children have given me up, taking their oaths by those who are no gods: when I had given them food in full measure, they were false to their wives, taking their pleasure in the houses of loose women.
But most of all, my brothers, do not take oaths, not by the heaven, or by the earth, or by any other thing: but let your Yes be Yes, and your No be No: so that you may not be judged.
And when Saul saw David going out against the Philistine, he said to Abner, the captain of the army, Abner, whose son is this young man? And Abner said, On your life, O king, I have no idea.
But David took his oath again and said, Your father sees that I am dear to you; so he says to himself, Let Jonathan have no idea of this, for it will be a grief to him; but as the Lord is living, and as your soul is living, there is only a step between me and death.