How to use the Book of Mormon to Prove the Trinity

Doug and Rob in Manti, UT


Doug and I have been attending the Mormon Miracle Pageant in Manti Utah for a number of years so it is like old home week seeing many of the Christians that have been coming year after year. Besides great fellowship, there is daily worship and witness training at the Ephraim Church of the Bible in the mornings and of course, witnessing to the LDS at the Pageant each night.

This year as part of the morning witness training, Tri-Grace Ministries presented a panel of pageant veterans to share their favorite witnessing technique and asked me to be part of that panel.

I shared that one of my favorite ways to start a witnessing conversation is with the Book of Mormon. I wear a shirt that reads, “Why Don’t Mormons Believe the Book of Mormon?” which catches the eye of many LDS walking by and draws a few into a conversation about the Book of Mormon. One of my favorite Book of Mormon verses is 2 Nephi 11:7:

“For if there be no Christ there be no God; and if there be no God we are not, for there could have been no creation. But there is a God, and he is Christ, and he cometh in the fulness of his own time.”

This verse states two things: 1) That Christ is God and 2) That Christ is our Creator. So you can use this verse to debunk the LDS pre-mortal life concept that Jesus is not our elder brother because He is our Creator or you can go in the direction that Christ is God, the second person of the Trinity. Since the Trinity is one of those subjects that Mormons laugh at and mock, I take them to 2 Nephi 31:21 which reads:

“….And now, behold, this is the doctrine of Christ, and the only and true doctrine of the Father, and of the Son, and of the Holy Ghost, which is one God, without end. Amen.”

Then I ask them why they don’t believe in the Trinity since it is taught in the Book of Mormon, which Joseph Smith said is the most correct book on the face of the earth.











Tri-Grace Ministries offers a great visual aid for explaining the Trinity by using a Trinity triangle showing the Father, Son and Holy Ghost as one God and then a second trinity triangle showing that God made man in His image as a triune being of body, soul and spirit. See: TRINITY DIAGRAM HANDOUT

After explaining the Trinity with this Trinity visual aid pamphlet and reminding Mormons that the Book of Mormon teaches the Trinity, I go to 2 John 9 which reads:

“Whosoever transgresseth, and abideth not in the doctrine of Christ, hath not God. He that abideth in the doctrine of Christ, he hath both the Father and the Son.”

I then explain that the Apostle John is saying that, if you don’t believe in the doctrine of Christ (the Trinity), then you will not have the Father nor the Son. I remind them again that the Book of Mormon, which Joseph Smith says in the most correct book, teaches the Trinity so if you don’t believe in the Trinity then you will not have the Father or the Son.

One night at the pageant, Trevor W. and I were walking to the food court when an LDS man, named Brian, approached us when he saw my shirt. As we talked, Brian stated that Trevor and I and himself were a lot closer in our beliefs than we realize. We disagreed by explaining that the Mormon Jesus was a different Jesus than that of the Biblical Jesus.

I asked Brian if he was saved and he replied that he was so I asked him if he was to die today, would he know which glory he would receive. He replied that he would not know until the final judgment. So, I went to 1 John 5:9-13, which is the Father’s testimony, and I had Brian read it out loud to us.

As he read he would say that he agreed until he read verse 13, which states that if you have believed in Jesus, then you will know that you have eternal life. I explained to Brian that by his own admission of not knowing if he would enter the celestial glory (eternal life), that he has not been believing in the true Jesus. I turned to the Book of Mormon and stated that Mormons don’t even believe in what the Book of Mormon teaches about Jesus.

I had Brian read 2 Nephi 11:7 explaining that Jesus is God, the second person of the Trinity, and then went to 2 Nephi 31:21 where Trevor and I explained the Trinity pamphlet. Brian was very interested in how we explained the Trinity and mentioned that he had been reading C S Lewis but when C S Lewis came to the Trinity, he just couldn’t understand what he was talking about but said that our explanation made some sense and was the best explanation he had heard.

Brian asked if he only believed in 80% of the Trinity, could he be saved? I had Brian read 2 John 9 and explained that anyone that doesn’t believe in the doctrine of Christ, they will not have the Father or the Son. Please pray for Brian to come to belief in the one true God.

One night Doug and I got into a conversation with Dennis, an elderly LDS man. After some time of playing LDS doctrine vs. Biblical truth ping-pong over salvation, Doug showed Dennis Ephesians 2:8-9 that grace was a free gift not something you earn. Dennis stated that he believed that grace was a gift from God but that we needed to do good works for our salvation.

We showed Dennis Moroni 10:32 in the Book of Mormon and asked how this verse showed that you needed to deny yourself of ALL sin before God’s grace would be sufficient for him. After some discussion over the impossibility of becoming sinless, Dennis admitted that no one could become sinless and then He changed the subject to exaltation. After showing him Isaiah 14:12-15, how Lucifer fell from heaven because he wanted to be like the most high God and how Lucifer used his own demise to deceive Eve into eating the fruit so she could become like Gods in Genesis 3:1-7, Dennis was without words.

I told Dennis that exaltation was blasphemy to God and would receive the same ending as Lucifer received. At this point, Dennis decided it was time to go back into the pageant grounds. He did let us pray for him before we shook hands and said our good byes. We had many conversations and handed out hundreds of tracts so please be in prayer for all those that received and heard the truth.

In His Grace and Mercy

Rob B.


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