A chiasm is a literary structure where the words of the first section of a passage are repeated in reverse order in the second. Typically whatever is in the center of the chiasm is what is being emphasized. In Genesis 22:1-19, the center is Isaac’s question, “Where is the lamb for the burnt offering?” and Abraham’s answer, “God will provide for Himself the lamb for the burnt offering” (Gen 22:7). Jesus was the Lamb. God spared Abraham’s son but he did not spare his own Son (Rom 8:32).