Elder David A. Bednar - Be Still, and Know That I Am God

 One of the classes I enjoyed most in college was soil mechanics.  Elder Bednar taught - 

"Jesus Christ is our Redeemer,6 our Mediator,7 and our Advocate8 with the Eternal Father and the rock upon which we should build the spiritual foundation of our lives.

Helaman explained, “Remember, remember that it is upon the rock of our Redeemer, who is Christ, the Son of God, that ye must build your foundation; that when the devil shall send forth his mighty winds, yea, his shafts in the whirlwind, yea, when all his hail and his mighty storm shall beat upon you, it shall have no power over you to drag you down to the gulf of misery and endless wo, because of the rock upon which ye are built, which is a sure foundation, a foundation whereon if men build they cannot fall.”9

The symbolism of Christ as the “rock” upon whom we should build the foundation of our lives is most instructive. Please note in this verse that the Savior is not the foundation. Rather, we are admonished to build our personal spiritual foundation upon Him."

And that - 

"The foundation is the part of a building that connects it to the ground. A strong foundation provides protection from natural disasters and many other destructive forces. A proper foundation also distributes the weight of a structure over a large area to avoid overloading the underlying soil and provides a level surface for construction.

A strong and reliable connection between the ground and a foundation is essential if a structure is to remain sturdy and stable over time. And for particular types of construction, anchor pins and steel rods can be used to attach the foundation of a building to “bedrock,” the hard, solid rock beneath surface materials such as soil and gravel."

In my mind, the foundation is our ordinances and covenants.

“Wherefore, whoso believeth in God might with surety hope for a better world, yea, even a place at the right hand of God, which hope cometh of faith, maketh an anchor to the souls of men, which would make them sure and steadfast, always abounding in good works, being led to glorify God.”