text: OzTorah » Blog Archive » What's wrong with Bilam's eyes? – Balak
  What's wrong with Bilam's eyes? – Balak
  Bilam is called ha'gever sh'tum ha'ayin, which some versions render, "the man whose eye is opened" (Num. 24:3,15). Another translation is "whose eye is true".
  Since Bilam is a prophet, the text must be describing his capacity for prophetic insight – his ability to perceive with his mind's eye.
  However, the same Hebrew root can be understood as meaning closed, not opened. Some of the sages therefore thought that the Torah was telling us that Bilam was blind in one eye (since it does not say sh'tum b'einav, i.e. sh'tum in both eyes, it seems that he had a problem only with one eye).
  Others said his prophetic capacity was defective until the moment when he "saw that it was right in the eyes of the Lord to bless Israel" (Num. 23:1) and when he "lifted up his eyes and saw Israel dwelling according to its tribes, the spirit of God came upon him" (Num. 23:2).