Flee from sexual immorality. All other sins a person commits are outside the body, but whoever sins sexually, sins against their own body.
-I Corinthians 6:18, NIV
Adultery is self-destructive sin.
It is not life-giving. It is not joy-producing. It is not (ultimately) fulfilling.
God condemns this behavior for how destructive it is. He made us and knows what is destructive for His creation. Adultery is one of those destructive acts.
Like a sugar-high, adultery might feel good for a season. However, the ‘crash’ is coming.
The high does not last. A high from committing sin never does. As a pastor I knew would say, “Sin always takes more than it gives.”
Plus, it destroys others in the process. Faithful spouses know this all too well!
I remember watching as the person I thought I married behaved completely opposite the way I had known her. Was she always that way or had she changed? God knows.
What I did know was that she was no longer the person that had won my heart. She was self-destructing in her sin.