1 Corinthians 7:2

Because of fornications (dia ta porneia). This is not the only reason for marriage, but it is a true one. The main purpose of marriage is children. Mutual love is another. The family is the basis of all civilization. Paul does not give a low view of marriage, but is merely answering questions put to him about life in Corinth.

Read 1 Corinthians 7:2