Genesis 22:11-13

New Revised Standard Version, Anglicised Catholic Edition

¹¹ But the angel of the Lord called to him from heaven, and said, ‘Abraham, Abraham!’ And he said, ‘Here I am.’ ¹² He said, ‘Do not lay your hand on the boy or do anything to him; for now I know that you fear God, since you have not withheld your son, your only son, from me.’ ¹³ And Abraham looked up and saw a ram, caught in a thicket by its horns. Abraham went and took the ram and offered it up as a burnt-offering instead of his son.