Isaiah seems to be referring to the coming of Nebuchadnezzar and the final destruction of Jerusalem in 587 BC. The Lord’s judgment over Jerusalem would be a day of confusion, trampling and tumult, a day which would bring destruction (“a battering down of walls”) and cries for help that would echo in the mountains (“a shouting to the mountains”).
5 Car c'est un jour de trouble, d'écrasement et de confusion, Envoyé par le Seigneur, l'Eternel des armées, Dans la vallée des visions. On démolit les murailles, Et les cris de détresse retentissent vers la montagne.