1 Corinthians 7

Evidently, the Corinthians asked for advice on some matters. Paul sees marriage as a way to curb immorality or lack of self-control. He thinks being single is better because this leaves more time for God and Paul probably thinks there is not much time left in the world before Jesus returns. Paul would not have had as much status with the Jews had he been unmarried so, likely, he was married at on time. Note that husband and wife are treated equally.

Note, he says this is his advise (not the Lord speaking,) when he says not to divorce. Unbelievers will be saved through believers. For the most part, Paul thinks one should stay with the same status he or she has when becoming a Christian. Unnecessary change just takes time away from God. The world as Paul sees it is passing away and this necessities undivided attention to God.