Dropped - Rather, “poured,” the proper word for heavy rain Exodus 9:33. The “early rain,” or heavy rain of autumn, usually began in October, so that Rizpah’s devoted watch continued about six months. How rare rain was in harvest we learn from 1 Samuel 12:17-18; Proverbs 26:1. The reason of the bodies being left unburied, contrary to Deuteronomy 21:23, probably was that the death of these men being an expiation of the guilt of a violated oath, they were to remain until the fall of rain should give the assurance that God’s anger was appeased, and the national sin forgiven.
Birds of the air ... beasts of the field - It is well known how in the East, on the death e. g. of a camel in a caravan, the vultures instantly flock to the carcass. (Compare Matthew 24:28.)