the bible never asks someone to pray for truth, even though it says the Holy Spirit guides us into all truth. Instead, it claims the measure of truth is the Word of God:
John 17:17 "Sanctify them by the truth; your word is truth."
Therefore, if the Christian God is talking to you through prayer, it will be speaking in accord with scripture.
Could you imagine someone asking you to pray to God if adultery was ok?! No. Why not? Because adultery clearly violates the scripture. It wouldn't matter what you claim was the answer given to you in prayer, if the message in prayer came from the same spirit responsible for scripture, then it will be in agreement with scripture, which is why the Apostles attempted to win converts by simply presenting the gospel as it aligned to scripture.
So, if the book of Mormon is the true Christianity, then it should align with the both the OT and NT, or at least the OT (if the book of Mormon declares superiority over the NT). But we know that is not the case because Mormon doctrine of the origin of God is completely contrary to both the OT and NT.
And just what is the word of God?
