As a Christian who has never been part of the LDS faith, but who has personally heard some of them relate their experience of being convinced of that faith, I would offer this answer.
A recurring phrase used by most of them was experiencing "a burning in the bosom" when they prayerfully asked for confirmation that the Book of Mormon was true. They all attributed that to the Holy Ghost. That convinced them, and they went on to become baptised LDS members.
I had become a Christian before meeting those people, leaving an American religion that I'd been brought up in, to start following Jesus only, sticking to the Bible's gospel of Jesus Christ, and being baptised in the name of the Father, and of the Son, and of the Holy Spirit. My first encounter with LDS missionaries led to being given a copy of the Book of Mormon, which I began to compare with the Bible. I listened to the LDS gospel and compared that with the biblical gospel of Jesus Christ. What I discovered gives me grounds for answering this question, for by then I was so 'saturated' in the Bible, and in understanding just who the Jesus of the Bible is, I could see where the reported encounters of LDS people diverged from what the Bible said it should be.
My answer is simply this - the Bible warns against emotional 'feelings' and 'spiritual experiences' that are not utterly rooted in following the Jesus of the Bible. This means that knowing and believing just who the risen Christ is (according to what the Bible says about that) is foundational to Christianity. The Bible warns that false Christs (Mat. 7:15 & 24:24), and false gospels (Gal. 1:6-9 even if uttered by an angel from heaven!), and false apostles (2 Cor. 11:13), and false prophets (1 John 4:1) will increase, to deceive many. Jesus himself told us, about the end times and the basis for judgment:
"Not every one that saith unto me, Lord, Lord, shall enter into the
kingdom of heaven; but he that doeth the will of my Father which is in
heaven. Many will say to me in that day, Lord, Lord, have we not
prophesied in thy name? and in thy name have cast our devils? and in
thy name done many wonderful works? And then will I profess unto them,
I never knew you: depart from me, ye that work iniquity." Matthew
7:21-23 K.J.V.
Therefore, I am a sceptic when it comes to people enthusing about an experience they had after prayer. Especially if it leads them to embrace a book that is not the Bible, as if it was the very word of God. Especially if it leads them to follow a man whose version of who Jesus Christ is does not square with what my Bible tells me Jesus Christ is.
That is how this Christian views the reported spiritual encounters of LDS people, who take their encounter to be that of God's Holy Spirit. And those are the reasons why I have to remain unconvinced. The testimony I gained of becoming a Christian took two years of studying the Bible to discover how John's gospel exposed as false the Jesus I'd been told to believe in from childhood. I have reason to believe that the Jesus of the LDS faith does not square with the Jesus of John's gospel. Therefore, what spirit is it that convinces millions of people to start believing in the Jesus of the LDS faith? I have to ask myself. Do LDS converts ever ask themselves that question, or do they just unquestioningly accept that the emotional 'burning in the bosom' (or whatever else it might be called nowadays) has to be God's Holy Spirit? Given all the warnings in the Bible about being deceived, would it not be helpful for people interested in the LDS faith to first thoroughly learn what the Bible says about that, and the Jesus to follow, before submitting to an subjective experience? Just asking, for that is what keeps me a sceptic on this matter.
the Bible warns against emotional 'feelings' and 'spiritual experiences'
can you share more references for this, it feels like the other scriptures are ambiguous in that they can be addressed towards any denomination, and stray from OP – depperm Mar 28 '24 at 11:21