Doctrine and Covenants 4:2 "Therefor, O ye that embark in the service of God, see that ye serve him with all your heart, might, mind and strength, that ye may stand blameless before God at the last day."
Doctrine and Covenants 88:62-63 "And again, verily I say unto you, my friends, I leave these sayings with you to ponder in your hearts with this commandment which I give unto you, that ye shall call upon me while I am near--Draw near unto my and I will draw near unto you: seek me diligently and ye shall fin me; ask, and ye shall receive; knock, and it shall be opened unto you."
Doctrine and Covenants 107: 100 "He that is slothful shall not be counted worthy to stand, and he that learns not his duty and shows himself not approved shall not be counted worthy to stand. Even so. Amen."