Lit., straight, which is the radical meaning of right.
Are gone astray (ἐπλανηÌθησαν)
See on Mar 12:24.
Following (ἐξακολουθηÌσαντες)
See on 2Pe 1:16; and 2Pe 2:2. Compare Jud 1:11.
The way
Note the frequent occurrence of the word way in the story of Balaam (Numbers 22), and Peter's use of the same phrase, as here, the right ways of the Lord, in Act 13:10.
Bosor
Rev. gives Beor, the Old Testament form of the name.