Genesis 22:10 YLT

⁸  and Abraham saith, 'God doth provide for Himself the lamb for a burnt-offering, my son;' and they go on both of them together.

⁹  And they come in unto the place of which God hath spoken to him, and there Abraham buildeth the altar, and arrangeth the wood, and bindeth Isaac his son, and placeth him upon the altar above the wood;

¹⁰  and Abraham putteth forth his hand, and taketh the knife -- to slaughter his son.

¹¹  And the messenger of Jehovah calleth unto him from the heavens, and saith, 'Abraham, Abraham;' and he saith, 'Here 'am' I;'

¹²  and He saith, 'Put not forth thine hand unto the youth, nor do anything to him, for now I have known that thou art fearing God, and hast not withheld thy son, thine only one, from Me.'