Tertullian

For the name of God, as being the natural designation of Deity, may be ascribed to all those beings for whom a divine nature is claimed,-as, for instance, even to idols. The apostle says: "For there be that are called gods, whether in heaven or in earth." The name of Christ, however, does not arise from nature, but from dispensation; and so becomes the proper name of Him to whom it accrues in consequence of the dispensation.