D&C 50

The Savior teaches doctrine concerning calls to serve -

"He that is ordained of God and sent forth, the same is appointed to be the greatest, notwithstanding he is the least and the servant of all."  (Doctrine and Covenants 50:26)

He then teaches the consequence and blessing of being the least (humble) and servant to all -

"Wherefore, he is possessor of all things; for all things are subject unto him, both in heaven and on the earth, the life and the light, the Spirit and the power, sent forth by the will of the Father through Jesus Christ, his Son.
28 But no man is possessor of all things except he be purified and cleansed from all sin.
29 And if ye are purified and cleansed from all sin, ye shall ask whatsoever you will in the name of Jesus and it shall be done."  (Doctrine and Covenants 50:27–29)

In my mind, everything in modern revelation seems so logical.