Pray that your husband will be humble and quick to agree with God about his sin. Pray that his heart will be tender toward the voice of the Lord.
Wash me clean from my guilt. Purify me from my sin. For I recognize my shameful deeds -- they haunt me day and night. Against you, and you alone, have I sinned; I have done what is evil in your sight. You will be proved right in what you say, and your judgment against me is just.(psalms 51:2-4)
No, O people, the LORD has already told you what is good, and this is what he requires: to do what is right, to love mercy, and to walk humbly with your God. (Micah 6:8)