In marriage we have a duty to God, our spuses, the world, and future generations. But we are sinners. A husband and wife need to acknowledge that when the Bible speaks of fools, it is not just speaking about other people, but about them as well. Even the wisest among us has moments of folly. So God gives us spouses to serve as wise friends by praying with and for us, attending church with us, speaking truth, and providing Scripture along with good books and online classes, lectures, and sermons to nourish fruitfulness in our lives.
