The commandment against adultery is more than just a commandment against cheating. This is a commandment that carries the weight of maintaining a covenant promise. It is a strong betrayal that only God can find a way to redeem.
2 Samuel 12:1-13
The Lord sent Nathan to David.
When he came to him, he said, “There were two men in a certain town, one rich and the other poor. The rich man had a very large number of sheep and cattle, but the poor man had nothing except one little ewe lamb he had bought. He raised it, and it grew up with him and his children. It shared his food, drank from his cup and even slept in his arms. It was like a daughter to him.
Now a traveler came to the rich man, but the rich man refrained from taking one of his own sheep or cattle to prepare a meal for the traveler who had come to him. Instead, he took the ewe lamb that belonged to the poor man and prepared it for the one who had come to him.”
David burned with anger against the man and said to Nathan, “As surely as the Lord lives, the man who did this deserves to die! He must pay for that lamb four times over, because he did such a thing and had no pity.”
Then Nathan said to David, “You are the man! This is what the Lord, the God of Israel, says: ‘I anointed you king over Israel, and I delivered you from the hand of Saul. I gave your master’s house to you, and your master’s wives into your arms. I gave you the house of Israel and Judah. And if all this had been too little, I would have given you even more. Why did you despise the word of the Lord by doing what is evil in his eyes?
You struck down Uriah the Hittite with the sword and took his wife to be your own. You killed him with the sword of the Ammonites. Now, therefore, the sword will never depart from your house, because you despised me and took the wife of Uriah the Hittite to be your own.’
“This is what the Lord says: ‘Out of your own household I am going to bring calamity upon you. Before your very eyes I will take your wives and give them to one who is close to you, and he will lie with your wives in broad daylight. You did it in secret, but I will do this thing in broad daylight before all Israel.’ ”
Then David said to Nathan, “I have sinned against the Lord.”
New International Version, 1984 Edition