Yet - , (literally, and) I am the Lord thy God from the land of Egypt God was still the same God who had sheltered them with His providence, ever since He had delivered them from Egypt. He had the same power and will to help them. Therefore their duty was the same, and their destruction arose, not from any change in Him, but from themselves. “God is the God of the ungodly, by creation and general providence.”
And thou shalt - (i. e., oughtest to) know no God but Me, for (literally, and) there is not a Saviour but me “To be God and Lord and Saviour are incommunicable properties of God. Wherefore God often claimed these titles to Himself, from the time He revealed Himself to Israel. In the song of Moses, which they were commanded to rehearse, He says, “See now that I, I am He, and there is no God with Me: I kill, and I make alive; I wound, and I heal; neither is there any that can deliver out of My hand” Deuteronomy 32:39. Isaiah repeats this same, “Is there a God besides Me? yea there is no God; I know not any” Isaiah 44:8; and “There is no God else besides Me, a just God and a Saviour; there is none else. Look unto Me and be ye saved, for I am God and there is none else” Isaiah 45:21, Isaiah 45:2; and, “I am the Lord, that is My Name; and My glory will I not give to another; neither My praise to graven images” Isaiah 42:8. : “That God and Saviour is Christ; God, because He created; Saviour, because, being made Man, He saved. Whence He willed to be called Jesus, i. e., Saviour. Truly “beside” Him, “there is no Saviour; neither is there salvation in any other, for there is none other name under heaven, given among men, whereby we must be saved” Acts 4:12. “It is not enough to recognize in God this quality of a Saviour. It must not be shared with “any other.” Whoso associates with God any power whatever to decide on man’s salvation makes an idol, and introduces a new God.”