There are different areas of relationships (dating, marriage, church, friendship, etc.), but for a relationship to be biblical, it must be in accord with the teaching of Scripture. The word, “biblical” is an adjective and simply describes the relationship as one that meets the criterion of the Bible as it defines, describes, and delineates the principles that should characterize any relationship. For instance, in dating, it would be a relationship that was between two believers and one that was sexually pure, free from fornication and the kind of sexual looseness that characteizes our society in general. In marriage, it would be a relationship that followed the truths of passages like Ephesians 5:22f and 1 Peter 3:1-7.