Genesis 24:2-4

24:2 Abraham said to his servant, the senior one in his household who was in charge of everything he had, “Put your hand under my thigh 24:3 so that I may make you solemnly promise by the Lord, the God of heaven and the God of the earth: You must not acquire a wife for my son from the daughters of the Canaanites, among whom I am living. 24:4 You must go instead to my country and to my relatives to find a wife for my son Isaac.”

Genesis 24:13-14

24:13 Here I am, standing by the spring, and the daughters of the people who live in the town are coming out to draw water. 24:14 I will say to a young woman, ‘Please lower your jar so I may drink.’ May the one you have chosen for your servant Isaac reply, ‘Drink, and I’ll give your camels water too.’ In this way I will know that you have been faithful to my master.”