The whole Bible is very positive about marriage, and has a great deal to say about it. Marriage is for a lifetime Ask people what they want from marriage and they will usually list companionship, sex, and children, in differing orders of importance. Ask them how long they expect it to last and the honest and reflective ones will say 'hopefully forever, but you never know'. It is a tragedy when marriages die and when dreams evaporate into legal disputes. The Bible too assumes that marriage will last as long as life.
Genesis says that marriage makes two individuals into one.
This oneness is achieved partly by human activity, when they positively promote that unity, and partly by divine activity. However Moses, Jesus and Paul all realised that things can go wrong. Moses made provisions for divorce, which recognised that a marriage had broken up and freed both parties for remarriage. Jesus condemned a certain type of divorce popular in his day, but did not say that marriages could never be ended by divorce. This is discussed in the next two chapters.