How could have Bnei Yisrael performed the Sin of the Golden Calf immediately after receiving the Torah? A look at the description of God's chariot shows that the cherubs are in fact oxen. Aharon had intended on bringing the Divine Presence down to earth after Moshe had disappeared; but the nation misunderstood his intentions, and believed the calf was a replacement for God. The same mistake was made, hundreds of years later, by Yerovam.