Terry and Carolyn Box display God's love in their marriage.
Marriage shows the relationship between Christ and the church and it is put on display in front of the whole world. It is to show how Christ loves the church and how the church is to be devoted to Him.
4. Ephesians 5:25-27 “Husbands, love your wives, just as Christ loved the church and gave Himself for her to make her holy, cleansing her with the washing of water by the word. He did this to present the church to Himself in splendor, without spot or wrinkle or anything like that, but holy and blameless.”