Evangelicals agree that the Bible is God's inerrant word. But we sometimes differ on how to relate the messages of the Old and New Testaments. Without a basic understanding of this crucial matter, it is difficult to know how to use the Testaments to formulate either doctrine or practice. For example: Was Israel the OT Church-are OT promises to God's national people fulfilled in the church today? Or, is Mosaic Law binding on believers now-are twentieth-century Christians to obey the Ten Commandme