Genesis 24:2-5

Abraham spoke to the senior servant in his household, the one in charge of everything he had, “Put your hand under my thigh and swear by GOD—God of Heaven, God of Earth—that you will not get a wife for my son from among the young women of the Canaanites here, but will go to the land of my birth and get a wife for my son Isaac.” The servant answered, “But what if the woman refuses to leave home and come with me? Do I then take your son back to your home country?”