We Gain Experience and Knowledge during Mortality

Doctrine and Covenants 122:7

7 . . . all these things shall give thee experience, and shall be for thy good.

The Prophet Joseph Smith said:

“When you climb up a ladder, you must begin at the bottom, and ascend step by step, until you arrive at the top; and so it is with the principles of the gospel—you must begin with the first, and go on until you learn all the principles of exaltation. But it will be a great while after you have passed through the veil before you will have learned them. It is not all to be comprehended in this world; it will be a great work to learn our salvation and exaltation even beyond the grave.”

(Teachings of Presidents of the Church: Joseph Smith [2007], 268.)