Jesus Christ said 3 defining things, as you can read in the Bible:

Number 1: “I tell you the truth, unless you are born again, you cannot see the Kingdom of God.” John 3:3 NLT

Number 2: “You didn’t choose me. I chose you. I appointed you to go and produce lasting fruit, so that the Father will give you whatever you ask for, using my name.” John 15:16 NLT

Number 3: “And I solemnly declare to everyone who hears the words of prophecy written in this book: If anyone adds anything to what is written here, God will add to that person the plagues described in this book. And if anyone removes any of the words from this book of prophecy, God will remove that person’s share in the tree of life and in the holy city that are described in this book.” Revelations 22:18-19 NLT

Now how in the world can somebody think that a Mormon, also known as belonging to the Church of Jesus Christ of the Latter-Day Saints, would go to Heaven? They are not born again, and therefore they are not chosen and appointed by God. Otherwise, they would do the will of Christ, but instead they are following their polygamist founder and false teacher Joseph Smith, who gave them the Book of Mormon, Doctrine and Covenants, and Pearl of Great Price which all adds and subtracts from the Word of God, the BIBLE! Same can be said about the Jehovah’s Witnesses; they also are not born again, and they follow the false doctrines from their Watchtower Bible and publications that adds and removes from the Bible.

Yes, let there be no doubt or discussion about this, since the Bible, God’s Word clearly says; “Let God’s curse fall on anyone, including us or even an angel from heaven, who preaches a different kind of Good News than the one we preached to you. I say again what we have said before: If anyone preaches any other Good News than the one you welcomed, let that person be cursed.” Galatians 1:8-9 NLT