Instead of prayer being the “tool” that will refine my marriage, Peter tells me that marriage is the tool that will refine my prayers! Peter tells us that we should improve our marriages so that we can improve our prayer lives. A man might be able to preach a sterling sermon, write inspiring books, and quote the Bible front to back. But if he hasn’t learned how to be a servant to his wife, to respect her, and to be considerate of her, then his spirituality is still infantile. His prayer life—the lifeblood of his soul—will be a sham.
Thomas, Gary (2008-09-02). Sacred Marriage: What If God Designed Marriage to Make Us Holy More Than to Make Us Happy? (p. 76). Zondervan. Kindle Edition