Genesis 24:1-6

1 Now Abraham was old, well advanced in years; and the Lord had blessed Abraham in all things.
2 Abraham said to his servant, the oldest of his house, who had charge of all that he had, "Put your hand under my thigh
3 and I will make you swear by the Lord, the God of heaven and earth, that you will not get a wife for my son from the daughters of the Canaanites, among whom I live,
4 but will go to my country and to my kindred and get a wife for my son Isaac."
5 The servant said to him, "Perhaps the woman may not be willing to follow me to this land; must I then take your son back to the land from which you came?"
6 Abraham said to him, "See to it that you do not take my son back there.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.