פּירוש אויף דברים 3:29

ונשב בגיא וגו׳ SO WE ABODE IN THE VALLEY [OVER AGAINST BETH PEOR], — and ye associated yourselves with idol-worship, yet, however, ועתה ישראל שמע אל החקים NOW, O ISRAEL, HEARKEN TO THE STATUTES and everything will be forgiven thee. But I — I was not privileged that it was forgiven me (Sifrei Devarim 30:2).

ונשב בגיא, “we settled down in the valley.” Moses refers to Numbers 25,1, 'וישב ישראל בשיטים ויחל העם לזנות וגו, Israel settled down at Shittim, and the people began to indulge in harlotry, etc.” At that time, 24000 of them fell victim to a plague as a result of their misconduct. As a result of this we are still stuck here.

we stayed in the Gai i.e., we had already stayed in the Gai (which was near the “summit of Pisgah”), since from there we went to the plains of Mo’av. The passage is explained correctly by assuming that the Gai forms part of the hills of Avarim [Numbers 33: 48]. Moshe now begins to talk about the commandments; and, since they were across Bet-Por , he begins by discussing idolatry.