Genesis 22:9-11

Revised Standard Version Catholic Edition

⁹ When they came to the place of which God had told him, Abraham built an altar there, and laid the wood in order, and bound Isaac his son, and laid him on the altar, upon the wood. ¹⁰ Then Abraham put forth his hand, and took the knife to slay his son. ¹¹ But the angel of the Lord called to him from heaven, and said, “Abraham, Abraham!” And he said, “Here am I.”