And the anger of the LORD was kindled against Moses, and he said, Is not Aaron the Levite thy brother? I know that he can speak well. And also, behold, he cometh forth to meet thee: and when he seeth thee, he will be glad in his heart. And the anger of the Lord was kindled against Moses - Surely this would not have been the case had he only in modesty, and from a deep sense of his own unfitness, desired that the Messiah should be preferred before him. But the whole connection shows that this interpretation is unfounded.
Is not Aaron the Levite thy brother? - Houbigant endeavors to prove from this that Moses, in Exodus 4:13, did pray for the immediate mission of the Messiah, and that God gives him here a reason why this could not be, because the Levitical priesthood was to precede the priesthood of our Lord. Is not Aaron the Levite, etc. Must not the ministry of Aaron be first established, before the other can take place? Why then ask for that which is contrary to the Divine counsel? From the opinion of so great a critic as Houbigant no man would wish to dissent, except through necessity: however, I must say that it does appear to me that his view of these verses is fanciful, and the arguments by which he supports it are insufficient to establish his point.
I know that he can speak well - ידעתי כי דבר ידבר הוא yadati ki dabber yedabber hu, I know that in speaking he will speak. That is, he is apt to talk, and has a ready utterance.
He cometh forth to meet thee - He shall meet thee at my mount, (Exodus 4:27), shall rejoice in thy mission, and most heartily co-operate with thee in all things. A necessary assurance, to prevent Moses from suspecting that Aaron, who was his elder brother, would envy his superior call and office.