Genesis 15:5

5 He brought him outside and said, "Look toward heaven and count the stars, if you are able to count them." Then he said to him, "So shall your descendants be."

Genesis 15:5 In-Context

3 And Abram said, "You have given me no offspring, and so a slave born in my house is to be my heir."
4 But the word of the Lord came to him, "This man shall not be your heir; no one but your very own issue shall be your heir."
5 He brought him outside and said, "Look toward heaven and count the stars, if you are able to count them." Then he said to him, "So shall your descendants be."
6 And he believed the Lord; and the Lord reckoned it to him as righteousness.
7 Then he said to him, "I am the Lord who brought you from Ur of the Chaldeans, to give you this land to possess."
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.