Question:
Is it wrong for a husband, whose wife has committed adultery and has a divorce, to remarry? Is he not innocent?

Answer:
I believe we can infer from Matthew 5:32 and 19:9 that one would be free to marry if their spouse was unfaithful and a divorce was procured. That divorce and remarriage was not God’s original intention can be seen from Genesis 2:21-24 and Matthew 19:4-6. But with the introduction of sin came the possibility of dissolving the marriage union through adultery. The act of adultery results in a new union (see 1 Corinthians 6:16) and can therefore be the ground for the dissolution of the former union. If the innocent party decides to have the marriage dissolved, it would have the same effect as if their spouse had died. In other words, they would be free to remarry (see Romans 7:3 and 1 Corinthians 7:39).