(3) Understand therefore.--Literally, the connection seems to be this: "The children of Anakim thou knowest--thou knowest also (the same word) to-day, that it is Jehovah thy God Himself that passeth over before thee, a consuming fire. He will destroy them, and He will make them to bow down before thee. And thou shalt make a conquest of them, and speedily annihilate them, according as Jehovah hath commanded thee."

Verse 3. - Understand therefore this day; rather, And thou knowest today or now. The expression corresponds to ver. 1, "Thou art to pass... and thou knowest." In the victory they had obtained over Sihon and Og, they had already had experience of the Lord's going before them, and leading them on in triumph. The repetition of the He in this verse is very emphatic. Consuming fire (cf. Deuteronomy 4:24). Quickly, or suddenly. There is no contradiction here of what is said in Deuteronomy 7:22; for there the reference is to the possession of the land by Israel, here it is to the destruction which was to come on the Canaanites - the former was to be by degrees, the latter was to come suddenly and overwhelmingly. As Jehovah hath said unto thee (cf. Exodus 23:23, 27, etc.; Deuteronomy 2:24, etc.).

9:1-6 Moses represents the strength of the enemies they were now to encounter. This was to drive them to God, and engage their hope in him. He assures them of victory, by the presence of God with them. He cautions them not to have the least thought of their own righteousness, as if that procured this favour at God's hand. In Christ we have both righteousness and strength; in Him we must glory, not in ourselves, nor in any sufficiency of our own. It is for the wickedness of these nations that God drives them out. All whom God rejects, are rejected for their own wickedness; but none whom he accepts are accepted for their own righteousness. Thus boasting is for ever done away: see Eph 2:9,11,12.Understand therefore this day,.... Or be it known to you for your encouragement, and believe it:

that the Lord thy God is he which goeth over before thee as a consuming fire: did not only go before them over the river Jordan, in a pillar of cloud and fire, to guide and direct them, and was a wall of fire around them to protect and defend them, but as a consuming fire, before which there is no standing, to destroy their enemies; see Deuteronomy 4:24,

he shall destroy them, and he shall bring them down before thy face; be they as great and as mighty, as large and as tall as they may, they will not be able to stand before the Lord, but will soon be made low, and be easily brought down to the earth by him, and to utter destruction; which would be done in a public and visible manner, so as that the hand of the Lord would be seen in it by the Israelites:

so shalt thou drive them out, and destroy them quickly, as the Lord hath said unto thee; that is, the far greater part of them, and so many as to make room for the Israelites, and which was quickly done. The Jews commonly say (a), that they were seven years in subduing the land; otherwise they were not to be driven out and destroyed at once, but by little and little: see Deuteronomy 7:22.

(a) Seder Olam Rabba, c. 11. p. 31, 32.