John Wesley on Deuteronomy 23:4

They met you not with bread and water - As the manner of those times was to wait and provide for strangers and travellers, which was the more necessary, because in those times and countries, there were no public houses of entertainment. Their fault then was unmercifulness to strangers and afflicted persons, which was aggravated both by their relation to the Israelites, as being the children of Lot, and by the special kindness of God, and of the Israelites to them, in not fighting against them.