The Israelites tired of waiting for Moses to come down from the mountain, so they prevailed upon Aaron to be their leader and fashion a golden calf so that they all might worship it as God.
Similarly, the post-apostolic church tired of waiting for Jesus to come down from heaven, so they began following each other and eventually produced an erroneous conception of God that has been handed down since then as a cornerstone of orthodoxy. The trinity doctrine is an idol, as dishonoring to God as was the golden calf. Both idols were spawned from a vacuum of faith. Moses did return, and so did Jesus.
Worship Christ our Lord!
For more on this subject, see: