He added no more — i.e., He spoke no more in this manner; or, there were only ten commandments. So Deuteronomy 5:25 : “If we add to hear “ — i.e., in this fashion.
Related Commentaries of Deuteronomy 5:22
Deuteronomy 5:22
22 These words the LORD spake unto all your assembly in the mount out of the midst of the fire, of the cloud, and of the thick darkness, with a great voice: and he added no more. And he wrote them in two tables of stone, and delivered them unto me.