GENESIS 22 AND THE BINDING OF ISAAC

The rabbis teach that the first and last trump represent the left and right horns of the ram that was caught in the thicket when Avraham/Abraham offered up His son Yitzchak/Isaac on the altar (known as the Akeidah, the binding of the sacrifice) when Avraham/Abraham offered up Yitzchak/Isaac as a burnt offering (olah) to the God of Israel on Mount Moriah in Genesis 22. For this reason, in traditional Judaism, Genesis / Bereishit 22 is read during Rosh HaShanah.