Not only is marriage called for directly from God in the earliest recordings of the world, but we see the same call from the New Testament as well. Paul says that in 1 Corinthians, "It is good for a man to marry. But since there is so much immorality each man should have his own wife, and each woman her own husband." (1 Cor 7:1-2)
In the Bible we have a very clear description of the way that husbands and wives are supposed to love one another.
"Husbands love your wives, just as Christ loved the church and gave himself up for here," (Eph 5:25)
A marriage is supposed to reflect the exact relationship that our Jesus had with the church. This means that there will be struggles in the relationship but that the final goal will be used as a way to glorify God.
The themes of submission that are found throughout the Bible dealing with marriage are a way that God shows us an earthly example of how we should live our lives towards him. We can not depend on ourselves for our strength but must look to God. In this same way one partner in the marriage can not sustain it but it is an effort on both parts. Ok so maybe its not the same cause we really don't put any effort into the strength that we get from God. I'm not exactly sure what I am trying to say here. All I know is that a solid marriage is a way to strengthen faith and glorify the original plan that God had for man.
If anyone might be able to figure out what I was saying or wants to offer some more insight to these thoughts please feel free to offer them up.