Genesis 22:9-11

New Revised Standard Version, Anglicised Catholic Edition

⁹ When they came to the place that God had shown him, Abraham built an altar there and laid the wood in order. He bound his son Isaac, and laid him on the altar, on top of the wood. ¹⁰ Then Abraham reached out his hand and took the knife to kill^[a] his son. ¹¹ But the angel of the Lord called to him from heaven, and said, ‘Abraham, Abraham!’ And he said, ‘Here I am.’