Destroy - Rather, overthrow. See Exodus 23:23.

And I will send my fear before thee,.... What should cause fear among the nations of the land of Canaan; either the hornets mentioned in the next verse as the explanative of this; or the fame of his mighty works, which he had done for Israel in Egypt, at the Red sea, and in the wilderness; which struck the inhabitants of Canaan with such a panic, that they were ready to faint and melt away, and lost all courage, Joshua 2:9.

and will destroy all the people to whom thou shalt come; that is, the greatest part of them:

and I will make all thine enemies turn their backs unto thee; flee away, not being able to face them and stand a battle, or, however, not stand it long, but run and make their escape: "or I will give thee the neck of them" (p); cause them to submit, to lay down their necks and be trampled upon; an expression denoting their subjection, and an entire conquest of them, see Psalm 18:39.

(p) "et dabo-cervicem", Pagninus, Montanus; "exponam tibi cervicem", Junius & Tremellius, Piscator; "ponam ad te cervicem", Drusius.

But the most important thing of all for Israel was the previous conquest of the promised land. And in this God gave it a special promise of His almighty aid. "I will send My fear before thee." This fear was to be the result of the terrible acts of God performed on behalf of Israel, the rumour of which would spread before them and fill their enemies with fear and trembling (cf. Exodus 15:14.; Deuteronomy 2:26; and Joshua 2:11, where the beginning of the fulfilment is described), throwing into confusion and putting to flight every people against whom (בּהם - אשׁר) Israel came. ערף את־איב נתן to give the enemy to the neck, i.e., to cause him to turn his back, or flee (cf. Psalm 18:41; Psalm 21:13; Joshua 7:8, Joshua 7:12). אליך: in the direction towards thee.

I will send my {p} fear before thee, and will destroy all the people to whom thou shalt come, and I will make all thine enemies turn their backs unto thee.

(p) I will make them afraid of your coming and send my angel to destroy them, as in Ex 35:2.

23:27 I will send my fear before thee - And they that fear will soon flee. Hosts of hornets also made way for the hosts of Israel; such mean creatures can God make use of for the chastising of his people's enemies.

backs: Heb. neck

23:20-33 It is here promised that they should be guided and kept in their way through the wilderness to the land of promise, Behold, I send an angel before thee, mine angel. The precept joined with this promise is, that they be obedient to this angel whom God would send before them. Christ is the Angel of Jehovah; this is plainly taught by St. Paul, 1Co 10:9. They should have a comfortable settlement in the land of Canaan. How reasonable are the conditions of this promise; that they should serve the only true God; not the gods of the nations, which are no gods at all. How rich are the particulars of this promise! The comfort of their food, the continuance of their health, the increase of their wealth, the prolonging their lives to old age. Thus hath godliness the promise of the life that now is. It is promised that they should subdue their enemies. Hosts of hornets made way for the hosts of Israel; such mean creatures can God use for chastising his people's enemies. In real kindness to the church, its enemies are subdued by little and little; thus we are kept on our guard, and in continual dependence on God. Corruptions are driven out of the hearts of God's people, not all at once, but by little and little. The precept with this promise is, that they should not make friendship with idolaters. Those that would keep from bad courses, must keep from bad company. It is dangerous to live in a bad neighbourhood; others' sins will be our snares. Our greatest danger is from those who would make us sin against God.