You may be satisfied in the teachings of Genesis where Abraham was to give up Isaac, his son, his only son to God. Aabraham told Isaaac that God would provide Himself, a Lamb for the offering. God stopped him from killing Isaac, and Abraham espied a Ram caught by his horns in a thicket and offered it up.
Abraham is the first to receive the Gospel, as is taught in the New Testament, and here he inadvertantly was propesying that God would be, Himself a Lamb for the offering. He said dthis even thought it was a ram he espeid and offered up, for a ram is not the fulfillment of what Abraham declared would be God, Himself.