Charles Spurgeon Commentary Genesis 22:1-2

"And it came to pass after these things, that God did prove Abraham, and said unto him, Abraham. And he said, Here am I. And he said, Take now thy son, thine only son, whom thou lovest, even Isaac, 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." — Genesis 22:1-2 (ASV)

"But, Lord, I have two sons, Ishmael and Isaac."