Numbers 22:31 (BSB)

Then the LORD opened Balaam’s eyes, and he saw the angel of the LORD standing in the road with a drawn sword in his hand. And Balaam bowed low and fell facedown.

From Numbers 22. Also in the ESV.

Commentary on Numbers 22:31

• John Calvin (Reformed), Calvin's Commentaries on Numbers 22:31: 31. Then the Lord opened the eyes of Balaam. This passage teaches us, that whatever be the acuteness of our senses, it is not only implanted in us by God, but also either sustained or extinguished by His secret inspiration. Balaam’s eyes are opened; consequently there was a veil before them previously, which prevented him from seeing what was manifest.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Numbers 22:22-35: We have here an account of the opposition God gave to Balaam in his journey towards Moab; probably the princes had gone before, or gone some other way, and Balaam had pointed out where he would meet them, or where they should stay for him, for we read nothing of them in this part of our narrative, only that Balaam, like a person of some...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 22:31: And Balaam said unto the angel of the Lord, I have sinned,.... That is, in beating the ass; not that he was sensible of his sin of covetousness, and of the evil disposition of his mind, and of his wicked intention in going along with the princes to curse Israel, if possible, and get Balak's presents and preferments: for I knew not that thou stoodest...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Numbers 22:21-41: THE JOURNEY. (Num. 22:21-41) Balaam . . . saddled his ass--probably one of the white sprightly animals which persons of rank were accustomed to ride. The saddle, as usually in the East, would be nothing more than a pad or his outer cloak.