Pray that your husband will grow spiritually and consider his accountability before the Lord. Pray that he will guard his heart by developing spiritual disciplines—Bible reading and study, prayer, meditation, scripture memorization, etc.
But grow in grace, and in the knowledge of our Lord and Saviour Jesus Christ. To him be glory both now and for ever. Amen. - 2 Peter 3:18
Keep thy heart with all diligence; for out of it are the issues of life. -Proverbs 4:23