Matthew Henry, Matthew Henry's Commentary on the Whole Bible… (1700s)
“ III. The Edomites and Egyptians had not so deep a mark of displeasure put upon them as the Moabites and Ammonites had. If an Edomite or Egyptian turned proselyte, his grand-children should be looked upon as members of the congregation of the Lord to all intents and purposes, v. 7, 8. We should think that the Edomites had been more injurious to the Israelites than the Ammonites, and deserved as little favour from them (Num. xx. 20) , and yet " Thou shalt not abhor an Edomite, as thou must an Ammonite, for he is thy brother." ”
