The people shall hear. Again in this place I have not scrupled to change the tenses; for it is plain that Moses is speaking of things future; although I do not deny, that by verbs of the past tense he confirms the certainty of the matter; which is a common figure with the Prophets. This boast depends on the mention of God's "strength;" for it was impossible for the Israelites to make their way through so many adverse nations into the land of Canaan, unless God had, as it were, put forth His hand from heaven and fought for them. Lest, then, their numerous difficulties should dishearten them, Moses declares that, although many powerful enemies should endeavor to oppose them, terror shall possess them all from heaven, so that, in their confusion and astonishment, they shall have no power of resistance.

The inhabitants of Palestina - i. e. the country of the Philistines. They were the first who would expect an invasion, and the first whose district would have been invaded but for the faintheartedness of the Israelites.

And the people shall hear, and be afraid,.... What follows from hence to the end of the song is plainly prophetic, a prediction of future events; and this clause respects the case of all the nations of the earth, who should hear the report of the plagues, brought upon the Egyptians for the sake of Israel, and of their being brought out of Egypt, and of their being led through the Red sea as on dry land, and of the destruction of Pharaoh and his host in it, which report would strike a panic in all that heard it, throughout the whole world; as well as of what the Lord would after this do for them in the wilderness, see Deuteronomy 2:25.
sorrow shall take hold of the inhabitants of Palestina; which was adjoining to the land of Canaan, and through which in the common way their road lay to it.

"People hear, they are afraid; trembling seizes the inhabitants of Philistia."