Mormom 9:1-4

And now, I speak also concerning those who do not believe in Christ. Behold, will ye believe in the day of your visitation—behold, when the Lord shall come, yea, even that great day when the earth shall be rolled together as a scroll, and the elements shall melt with fervent heat, yea, in that great day when ye shall be brought to stand before the Lamb of God—then will ye say that there is no God? Then will ye longer deny the Christ, or can ye behold the Lamb of God? Do ye suppose that ye shall dwell with him under a consciousness of your guilt? Do ye suppose that ye could be happy to dwell with that holy Being, when your souls are racked with a consciousness of your guilt that ye have ever abused his laws? Behold, I say unto you that ye would be more miserable to dwell with a holy and just God, under a consciousness of your filthiness before him, than ye would to dwell with the damned souls in hell.

At point will you believe? If you are questioning the truthfulness of the word, know that you will know at some point. It is better to learn about it now when you have a chance to change your life than latter when you meet Christ on judgment day.