(5) Not for thy righteousness . . . dost thou go.--The pronoun is emphatic. There is no reason why thou of all others shouldest be thus honoured.

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.Not for thy righteousness, or for the uprightness of thine heart,.... Neither for their external righteousness before men, or their outward conformity to the law, nor for the inward sincerity of their hearts, and their upright intentions in doing good, in which they were defective:

dost thou go to possess their land; this is repeated, and enlarged on, and explained, that this notion might be entirely removed from them, and not entertained by them; similar to which is that of men, who fancy that their sincere obedience, though imperfect, will be accepted of God instead of a perfect one, on account of which they shall be justified and saved; but by the deeds of the law no flesh living can be justified in the sight of God, nor by any works of righteousness done by the best of men, and in the best manner they are capable of, will any be saved:

but for the wickedness of those nations the Lord thy God doth drive them out from before thee; which is repeated, that it might be taken notice of as the true reason of the Lord's dealing with them in such severity; and which because it would be now doing, when the Israelites passed over Jordan, and went in to possess the land, it is expressed in the present tense, "doth drive", the work being not yet finished; sin was the cause of their ejection out of their land, and another thing was the reason of the Israelites possessing it, and not their righteousness next expressed:

and that he may perform the word which the Lord sware unto thy fathers, Abraham, Isaac, and Jacob; it was to fulfil his covenant, and make good his word of promise to their fathers, and not on account of any righteousness of theirs; and the salvation of the Lord's people in a spiritual sense, and their enjoyment of the heavenly Canaan, are owing to the gracious purposes and promises of God, and to his covenant engagements, as well as to the undertakings, obedience, and righteousness of his Son, and not to any righteousness of theirs.