Numbers 20:12

And the Lord spake unto Moses and Aaron. — We read in Psalms 106:33 that the Israelites “provoked (literally, made to rebel) his spirit, so that he spake unadvisedly with his lips.” Whatever was the nature of the sin thus committed, it is clear that Aaron was a participator in it with Moses. Some have thought that the sin of Moses consisted in addressing the people as rebels (or as rebellious ones); but this is the charge repeatedly brought against them in the book of Deuteronomy (see Numbers 1:26; Numbers 1:43; Numbers 9:23; Numbers 31:27), under circumstances in which it is impossible to suppose that Moses committed the same sin. It has also been thought that the sin of Moses and Aaron consisted in arrogating to themselves the honour which was due only to God. “Must we fetch you water?” but the personal pronoun does not occur in the Hebrew, as it might, and probably would, have occurred, if intended to be emphatic. The more probable explanation appears to be that, notwithstanding the miraculous supply of water which had begun at Rephidim, and which had been subsequently continued, Moses and Aaron distrusted the word and power (Numbers 20:12) of God, and that they yielded to the impulse of impatience and anger, as betrayed both by the language which they used and by the double smiting of the rock, to which Moses had been commanded only to speak. To what degree Aaron was concerned in these sins can be inferred only from the facts that he, as well as Moses, was charged with the sin of unbelief, and that the punishment of exclusion from the land of Canaan was inflicted upon both.

(12) Therefore ye shall not bring this congregation... — In Numbers 14:30 Caleb and Joshua are mentioned as the only exceptions to the general sentence of exclusion pronounced against the generation which had come out of Egypt, and which consisted of those who were above twenty years of age. It does not appear, however, from that passage whether the sentence pronounced against Moses and Aaron had, or had not, been delivered at that time, inasmuch as they were the speakers on that occasion, and they belonged to the tribe of Levi, which was not included in the numbering to which reference is made in Numbers 20:29.