Divorce was different in the days of Christ. A man could divorce his wife. Even Joseph thought about divorcing Mary when he found she was pregnant (See Matthew, Ch 1)

However, in regard to divorce today, the Bible does say if you marry a divorced person that is adultery. But it also says to not be yoked unequally with unbelievers. (Corinthians)

Even ministers are divorced. It is a different world today. But a strong Chrisitian marriage will have the couple pray together, get counseling, and so forth. Pray a lot lot by yourelf and together.