Genesis 24:1-8

Now Abraham was old, advanced in age; and the LORD had blessed Abraham in every way. Abraham said to his servant, the oldest of his household, who had charge of all that he owned, “Please place your hand under my thigh, and I will make you swear by the LORD, the God of heaven and the God of earth, that you shall not take a wife for my son from the daughters of the Canaanites, among whom I live, but you will go to my country and to my relatives, and take a wife for my son Isaac.” The servant said to him, “Suppose the woman is not willing to follow me to this land; should I take your son back to the land from where you came?” Then Abraham said to him, “Beware that you do not take my son back there! The LORD, the God of heaven, who took me from my father’s house and from the land of my birth, and who spoke to me and who swore to me, saying, ‘To your descendants I will give this land,’ He will send His angel before you, and you will take a wife for my son from there. But if the woman is not willing to follow you, then you will be free from this my oath; only do not take my son back there.”