Mosiah 2 

41 "And moreover, I would desire that ye should consider on the blessed and happy state of those that keep the commandments of God. For behold, they are blessed in all things, both temporal and spiritual; and if they hold out faithful to the end they are received into heaven, that thereby they may dwell with God in a state of never-ending happiness. O remember, remember that these things are true; for the Lord God hath spoken it."

Do I really need to know . . .?

Quotes from a Prophet:

“I plead with you  . . .  Do the spiritual work to find out for yourselves, and please do it now. Time is running out.” - Russell M. Nelson

“In coming days, it will not be possible to survive spiritually without the guiding, directing, comforting and constant influence of the Holy Ghost,” - Russell M. Nelson