Bereshis 22:1-2

Orthodox Jewish Bible

22 And it came to pass after these things, that G-d did test Avraham, and said unto him, Avraham: and he said, Hineini (Behold, here I am).

² And He said, Take now thy son, thine ben yachid (only son) Yitzchak, whom thou lovest, and get thee into eretz Moriah; and offer him there for a burnt offering upon one of the mountains which I will tell thee of.