objection
Jesus never taught Nicaea
Objection
Jesus never taught the Nicene Creed.
What is true
The formal creed was written after the New Testament.
Why it is not enough
Later wording does not prove later doctrine. Nicaea guarded biblical claims about one God, the deity of the Son, and the Son not being created.
Key question: Which biblical claim behind Nicaea do you reject?
Nicaea answered a biblical pressure
The church had to say how Jesus could be distinct from the Father while also being God, Creator, and worthy of divine honor within biblical monotheism.
The Nicene answer did not invent the problem. John, Colossians, Hebrews, and the baptismal command already forced the question.
Rejecting the creed means rejecting its claims
If someone rejects Nicaea because it says the Son is true God, begotten not made, and of one divine being with the Father, then the disagreement is at the Christian center.
The fair question is specific: which claim is false? One God, the Son as Creator, the Son as uncreated, or Father and Son as personally distinct?
References
These are the public sources behind the answer, with LDS doctrine cited from LDS material where possible.
John 1
BibleBibleRef
If all created things came through Christ, Christ is not inside the created order.
Are 'Mormons' Christian?
Official LDSThe Church of Jesus Christ of Latter-day Saints
Official essay acknowledging LDS rejection of post-New Testament creeds and distinct restoration claims.
Nicene Creed
ChristianUnited States Conference of Catholic Bishops
Representative text of the historic Nicene confession of one God, the Trinity, and the eternal deity of Christ.