That job is to be a sign and a sacrament of God's love. We, all married couples, are a living sign of God's covenant with his people and of Christ's love for the church. The reality of that love is discovered in the everyday reality of a couple's love for one another. We are called to lay down our lives for one another in so doing to discover a greater love still. We help shape our married lives, but we are also shaped by it.
Marriage is a growth in holiness and wholeness.
By giving of ourselves we grow spiritually, and we give witness to the love of God.