Correct, but to follow the Messiah is to follow self sacrifice, they instead went back to worshiping other gods that required no sacrifice from them but the sacrifices of others like Baal, Moloch, Satan, Lucifer, Snakes, and anything except to put themselves on a cross.
Matthew 1:23 is Isaiah 7:14 and the bridge from old to the new testament and all the proof that the Hebrews needed.