This passage is in reference to Christ coming to earth and becoming man. The founder of your church, Joseph Smith, taught that God is not eternal and that He was a man before becoming God.
Correction
Joseph Smith was NOT the founder, Joseph Smith was a servant, a Prophet of God who helped Restore "The Church of Jesus Chits of Latter Day Saints!"
Jesus was always God in the OT he was Jehovah and his Father was Eloheim!
You really should read John 5
19 Then answered Jesus and said unto them, Verily, verily, I say unto you, The Son can do nothing of himself, but what he seeth the Father do: for what things soever he doeth, these also doeth the Son likewise.
20 For the Father loveth the Son, and sheweth him all things that himself doeth: and he will shew him greater works than these, that ye may marvel.
Before Jesus could do what he was able to do he had to see and learn from his Father do likewise!