God has made this very plain. God has made marriage, because it is so important, very plain. Very plain for the littlest child to understand. When something is so important, it has to be plain. And God has made it plain.
Marriage is for life - one man, one woman, till death.
It is for life because marriage is a picture of something faithful, something unending. It is the picture of God and His church. It is the picture of the love of God. That is why marriage is for life. If we understand those things, then we need to live in marriage in a holy way.