So when God had me journey from my father’s house, I said to Sarah, ‘This is how you can show your loyalty to me: Wherever we go, say of me, “He is my brother.”’”
Jewish Publication Society of America Version (JPS1917) - Genesis 20:13 >And it came to pass, when God caused me to wander from my father's house, that I said unto her: This is thy kindness which thou shalt show unto me; at every place whither we shall come, say of me: He is my brother.'