If nothing else this shows a couple of different methods of scholarship.

What God Has Joined by David Instone-Brewer in Christianity Today

Response:
Tragically Widening the Grounds of Legitimate Divorce by John Piper

Related Scripture:
Malachi 2:13-16, Matthew 5:32, Matthew 19:9-11, Mark 10:11-12, Luke 16:18, Romans 7:2, 1 Corinthians 7:15