30, 31. Then Joshua built an altar unto the Lord God of Israel in mount Ebal—(See on De 27:11). This spot was little short of twenty miles from Ai. The march through a hostile country and the unmolested performance of the religious ceremonial observed at this mountain, would be greatly facilitated, through the blessing of God, by the disastrous fall of Ai. The solemn duty was to be attended to at the first convenient opportunity after the entrance into Canaan (De 27:2); and with this in view Joshua seems to have conducted the people through the mountainous region that intervened though no details of the journey have been recorded. Ebal was on the north, opposite to Gerizim, which was on the south side of the town Sichem (Nablous).

     35. There was not a word of all that Moses commanded, which Joshua read not—It appears that a much larger portion of the law was read on this occasion than the brief summary inscribed on the stones; and this must have been the essence of the law as contained in Deuteronomy (De 4:44; 6:9; 27:8). It was not written on the stones, but on the plaster. The immediate design of this rehearsal was attained by the performance of the act itself. It only related to posterity, in so far as the record of the event would be handed down in the Book of Joshua, or the documents which form the groundwork of it [HENGSTENBERG]. Thus faithfully did Joshua execute the instructions given by Moses. How awfully solemn must have been the assemblage and the occasion! The eye and the ear of the people being both addressed, it was calculated to leave an indelible impression; and with spirits elevated by their brilliant victories in the land of promise, memory would often revert to the striking scene on mounts Ebal and Gerizim, and in the vale of Sychar.