Charles Ellicott Commentary Numbers 34:7

"And this shall be your north border: from the great sea ye shall mark out for you mount Hor;" — Numbers 34:7 (ASV)

Mount Hor.— It has been thought by some that Hermon is the mountain to which reference is made. But, as Ritter has observed (“Comparative Geography of Palestine,” 3, p. 176), “Hermon stands too far eastward to answer the conditions of the problem,” and he thinks that some peak very near the Mediterranean must be meant. Von Raumer considers that it was probably one of the peaks belonging to the Lebanon range, and discernible from Sidon. (Ib.)