Genesis 20:13

20:13 When God made me wander from my father’s house, I told her, ‘This is what you can do to show your loyalty to me: Every place we go, say about me, “He is my brother.”’”

Genesis 21:23

21:23 Now swear to me right here in God’s name that you will not deceive me, my children, or my descendants. Show me, and the land where you are staying, the same loyalty that I have shown you.”