Prayer for a marriage

My marriage has fallen apart. My husband been unfaithful and has/had a substance abuse issues. He isn't honest with me or himself. I thought we could save our marriage, but I don't know how. I need prayer for faith, strength and wisdom. We have little children and this has affected my parenting. Please pray for my spouse to know God and for God to soften his heart. Please pray for my sweet children. Please pray that I hear God. Jessica