John Wesley on Numbers 22:5

Balaam - Who is called a prophet, 2Pet 2:16, because God was pleased to inspire and direct him to speak the following prophecies. Indeed many of the Jewish writers say, that Balaam had been a great prophet, who for the accomplishment of his predictions, and the answers of his prayers, had been looked upon justly as a man of great interest with God. However it is certain, that afterwards for his covetousness, God departed from him. Beor - Or, Bosor, 2Pet 2:15, for he had two names, as many others had. Pethor - A city in Mesopotamia. By the river - By Euphrates, which is called the river, by way of eminency, and here the river of Balaam's land or country, to wit, of Mesopotamia.