Genesis 22:1-2

And it came to pass after these things, that God did tempt Abraham, and said unto him, Abraham: and he said, Behold, {here} I {am}. {Behold...: Heb. Behold me} And he said, Take now thy son, thine only {son} Isaac, whom thou lovest, and get thee into the land of Moriah; and offer him there for a burnt offering upon one of the mountains which I will tell thee of.