The Nephite teaching had not only been that God would come down to earth to redeem mankind, but that the redemption would involve a victory over death and sin. The Nephites gathered in Bountiful had understood that the signs had been given that the Messiah had died. Now they had in front of them the witness that he had arisen. If they were gathered together for a harvest festival and were speaking of conversing about his death, they were now powerfully reminded that his death was not an ending, but rather a very important turning point.
Understanding that, “they did fall down at the feet of Jesus, and worship him.” Why would they worship Jesus, and not the Father? They still needed to learn that there are clear differences between them. They had been taught that God himself would come down. Now that event had come true. They had always worshipped God, and now that God was with them, they were overcome in such a way as to praise and worship Him even more.