ציטירנדיקער פּירוש אויף במדבר 23:13

לא יוכל לראות, he could not see clearly. In order for a blessing to take hold it is necessary for the one bestowing the blessing to see the party whom he blesses at the time the blessing is pronounced. [the same is true of a curse, this is why Balak took Bileam to a vantage point from which he could see the people of Israel whom he had been hired to curse, clearly. (Numbers 23,13). G’d also took Moses to a point from which he could see the land of Israel clearly so that he could bless the land. Something similar occurred in Kings II 2,24 where Elisha turned around to face the lads mocking his baldness before he cursed them.

ומספר את רובע ישראל, “nor who has numbered even one quarter of Israel?” Balak himself had told Bileam that only a small section of it was visible from their vantage point. (verse 13)

ויעלהו במות בעל וירא משם קצה העם, “he brought him up to the heights of Baal, and from there he could view the edge of the people.” Balak had brought him to an elevated piece of land from where it was possible to see some of the people of Israel. The Torah makes a point of telling us that Bileam could not see the whole people, seeing that the pattern in which they were encamped spread out in the four directions of the globe. This made it impossible to see more than some of them at one time. It was commonly believed that for a curse or a blessing to be effective, there had to be at least visual contact between the parties concerned. On the second occasion Balak informed Bileam in advance that he would only be able to see part of the people. Nonetheless he asked Bileam to at least curse the part of the people who were within his field of vision (23,13) He made it plain that he was unable to provide Bileam with a site from which he could see the entire encampment of the Israelites in all directions. Balak thought that possibly among the various sections of the people there could be a group of righteous people whom G’d did not want to be harmed in any way.