because they've actually studied the Book of Mormon and taken the challenge to ask the Lord whether it's true. When the Lord tells you it is by the Holy Spirit, you tend to believe it. Makes it much easier to see through the caricature presented by those who dont understand the doctrine of Christ
You're pretty much admitting that the Book of Mormon is false and teaches false doctrines.
Reasons:
1) Have to study the Book of Mormon first to find truths
2) After studying the Book of Mormons, you has to take the challenge of testing its truths by asking a demon, pretending to be God, to let you know what is true. by asking a demon that pretends to be God
3) What you think is the Holy Spirit is actually a demon. This demon have power to influence man's will but no power to really convict the will. The demon's power of is mainly seduction. The demon is only able to seduce some people's will and they tend to believe in its lies. However, some people will not be seduced by the demon and refuses to believe its lies.
so God is a demon? Exactly how do you learn truth if it isn't through study and revelation from the Holy Spirit.
was it a demon that revealed to Peter that Jesus was the Son of God?
the bible says to test all things and you say testing the Book of Mormon is demonic? Paul said that you can only learn the things of the Spirit by the Spirit.
I guarantee you that it isn't God encouraging you not to pray about the Book of Mormon. Because the Holy spirit encourages a man to pray in all thing.
or are you really so disbelieving that you don't think God the Father can answer your prayer? You really think praying to Him is to a demon?
your reasoning makes no sense. How is the bible any different? How would you know it is true if you don't ask the Lord? How can you know that Jesus is the Christ without the Spirit of prophesy? And how can you obtain a witness of that Spirit unless exercise faith and ask?
I know by the power of the Holy Spirit that Jesus is the Christ and that the Bible and Book of Mormon are true. Do demons now testify of Christ? Do they preach redemption through Jesus Christ? Can a house divides stand?
the Pharisees tried to convince the people that Christ cast out devils by the power of the devil. He didn't find that reasoning very convincing.
when we prophesy of Christ have we obtained they Spirit from a demon? When we heal the sick is that power a gift from the devil? Since when does the devil heal anyone? It's contrary to his nature.
read the Book of Mormon for yourself and you will learn more about Christ than anywhere else.