Under the New Covenant, however, it undergoes a subtle variation in that Christ sets Himself forward as the comprehensive Lord, a position that we understand can only be accorded to God Himself. The justification for this remarkable claim by Christ is twofold: first, by very nature He was God and second, His person as the God-man was awarded the full title “Lord” (i.e. Yahweh) upon the completion of His mission in this world (Phil. 2:9-11). We should not be surprised, then, to hear Him say, “All authority in heaven and on earth has been given to Me” (Matt. 28:18).
Tom Wells