The biblical term “prophet” refers to one who speaks for another. The term is used for Aaron who spoke for Moses (Exod. 7:1-2). Most frequently it is used in the Bible for those who speak for God. The prophets in ancient Israel interpreted and expounded God’s instruction, what is called the Mosaic Law. They also predicted God’s judgment on those who broke their covenant agreement with God and proclaimed God’s blessings on those who were faithful to the covenant obligations.