Matthew Poole and continuators on Deuteronomy 33:1

1 AND this is the blessing, wherewith Moses the man of God blessed the children of Israel before his death.

He is said to bless them ministerially, partly by praying to God with faith for his blessing upon them, partly by foretelling the blessings which God would confer upon them: for the Prophers are oft said to do what they foretel should be done, as Gen. 49. 7. Ier. 1. 10. Ezek. 43. 3. Hos. 6. 5. And Moses calls himself here the man of God, i. e. the servant or prophet or minister of God, as this phrase signifies, 1 Sam. 9. 6, 7. 1 Tim. 6. 11. to acquaint them that the following prophecies were not his own inventions, but divine inspirations.

(i. e) The several tribes: onely Simeon is omitted, either 1. in detestation of their parent Simeon his bloody and wicked carriage, for which Iacob also gives that tribe a curse rather than a blessing, in Gen. 49. But as for Levi, who is joyned with him in that censure and curse, Gen. 49. 5, 6, 7. he is here separated from him and exempted from that curse and blessed with an eminent blessing for a singular and valuable reason expressed here v. 8, 9. whereas Simeons tribe had been so far from expiating their fathers crime that they added new ones, their Prince being guilty of another notorious crime, Numb. 25. 6, 14. and his tribe too much concurring with him in such actions, as Interpreters gather from the great diminution of the numbers of that tribe, which were 59300 in Num. 1. 23. and but 22200 in Num. 26. 14. which was near 40 years after. Or 2. because that Tribe had no distinct inheritance, but was to have his portion in the Tribe of Iudah, as he had Ios. 19. 1. and therefore he must needs partake with them in their blessings.