And he took up his parable, and said, Balaam the son of Beor hath said, and the man whose eyes {b} are open hath said:

(b) His eyes were shut up before in respect to the clear visions which he saw after.

Wesley's Notes

24:3 Whose eyes are open - Heb. Who had his eyes shut, but now open. The eyes of his mind, which God had opened in a peculiar and prophetical manner, whence prophets are called Seers, 1Sam 9:9. It implies that before he was blind and stupid, having eyes, but not seeing nor understanding.

King James Translators' Notes

whose...: Heb. who had his eyes shut, but now opened

Jamieson-Fausset-Brown Bible Commentary

3. the man whose eyes are open-that is, a seer (1Sa 9:9), a prophet, to whom the visioned future was disclosed-sometimes when falling into a sleep (Ge 15:12-15), frequently into "a trance."

Matthew Henry's Concise Commentary

24:1-9 Now Balaam spake not his own sense, but the language of the Spirit that came upon him. Many have their eyes open who have not their hearts open; are enlightened, but not sanctified. That knowledge which puffs men up with pride, will but serve to light them to hell, whither many go with their eyes open. The blessing is nearly the same as those given before. He admires in Israel, their beauty. The righteous, doubtless, is more excellent than his neighbour. Their fruitfulness and increase. Their honour and advancement. Their power and victory. He looks back upon what had been done for them. Their power and victory. He looks back upon what had been done for them. Their courage and security. The righteous are bold as a lion, not when assaulting others, but when at rest, because God maketh them to dwell in safety. Their influence upon their neighbours. God takes what is done to them, whether good or evil, as done to himself.