That speak in proverbs; the poets, or other ingenious persons, to wit, of the Amorites or Canaanites, who made this following song of triumph over the vanquished Moabites; which is here brought in partly as a proof that this was now Sihon's land, and partly as an evidence of the just judgment of God in spoiling the spoilers, and subduing these who insulted over their conquered enemies. Come into Heshbon: these are the words either of Sihon speaking thus to his people, or of the people exhorting one another to come and possess and repair the city which they had taken. The city of Sihon; that which once was the royal city of the king of Moab, but now is the city of Sihon.
Related Commentaries of Numbers 21:27
Numbers 21:27
27 Wherefore they that speak in proverbs say, Come into Heshbon, let the city of Sihon be built and prepared: