This is obviously an absolute, complete, and indivisible being who is speaking.
And again in Isaiah: "Thus saith Jehovah, the king of Israel, I am the First and I am the Last, and beside Me there is no God." (Isa. 44:6.)
And in Zechariah: "In that day Jehovah shall be king over all the earth; in that day Jehovah shall be one and His name one." (14:9.)
The Bible certainly clinches the matter, and for those who have hitherto accepted such creeds its authority is final.
