The talk I am taking Elder Bednar's words from can be found here.
Disclaimer: I made my own images for this so they might be a bit silly...
Imagine that marriage is a triangle.
At the bottom you will have your husband and your wife. And at the top you will find God.
As we begin to put the Lord first we move closer to him on the triangle...
As we move closer to God we also move closer to our spouse!
Here is what Elder Bednar says,
The Lord Jesus Christ is the focal point in a covenant marriage relationship. Please notice how the Savior is positioned at the apex of this triangle, with a woman at the base of one corner and a man at the base of the other corner. Now consider what happens in the relationship between the man and the woman as they individually and steadily “come unto Christ” and strive to be “perfected in Him” (Moro. 10:32). Because of and through the Redeemer, the man and the woman come closer together.
And this is the important part:
As a husband and wife are each drawn to the Lord (see 3 Ne. 27:14), as they learn to serve and cherish one another, as they share life experiences and grow together and become one, and as they are blessed through the uniting of their distinctive natures, they begin to realize the fulfillment that our Heavenly Father desires for His children. Ultimate happiness, which is the very object of the Father’s plan, is received through the making and honoring of eternal marriage covenants.