Unknown to many Christians are several ideas, legends, and lore in the Jewish tradition concerning the story in Genesis 22. Christians often refer to this story as “the sacrifice of Isaac,” while Jews generally call it “the binding of Isaac” in order to emphasize that Isaac was not ultimately sacrificed.
Still, other lesser-known alternative endings cropped up outside of the biblical literature in Jewish midrash — commentaries or interpretations of biblical stories usually written by rabbis in the first 10 centuries. In one such midrash, Isaac was wounded when Abraham began the sacrificial act. Isaac was then carried to Paradise where he remained for three years while he healed. In another story, Isaac literally died of fright while he was bound upon the altar and his soul flew out of him before Yahweh restored it to him with dewdrops for the Resurrection of the dead. In yet another one, Isaac’s body was reduced to ash on the sacrificial pyre and the Holy One again revived him with life-giving dew.
If you want to learn more about this, you might read The Last Trial by the Jewish scholar Shalom Spiegel. His book researches these and other texts, legends, and commentaries on this passage in Genesis.