Verse 23. - I was also upright before him (compare what is said of David in 1 Kings 11:4; 1 Kings 14:8; 1 Kings 15:5). Like Job, he was "perfect and upright " - " one that feared God, and eschewed evil" (Job 1:1). And I kept myself from mine iniquity; i.e. from the sin to which I was especially tempted." (Kay compares the αὐπερίστατος ἁμαρτία of Hebrews 12:1.) But what sin this was, we have no means of determining. All that appears is that David had an inclination to some particular form of sin, against which he found it necessary to be continually upon his guard.

18:20-28 Those that forsake the ways of the Lord, depart from their God. But though conscious to ourselves of many a false step, let there not be a wicked departure from our God. David kept his eye upon the rule of God's commands. Constant care to keep from that sin, whatever it be, which most easily besets us, proves that we are upright before God. Those who show mercy to others, even they need mercy. Those who are faithful to God, shall find him all that to them which he has promised to be. The words of the Lord are pure words, very sure to be depended on, and very sweet to be delighted in. Those who resist God, and walk contrary to him, shall find that he will walk contrary to them, Le 26:21-24. The gracious recompence of which David spoke, may generally be expected by those who act from right motives. Hence he speaks comfort to the humble, and terror to the proud; Thou wilt bring down high looks. And he speaks encouragement to himself; Thou wilt light my candle: thou wilt revive and comfort my sorrowful spirit; thou wilt guide my way, that I may avoid the snares laid for me. Thou wilt light my candle to work by, and give me an opportunity of serving thee. Let those that walk in darkness, and labour under discouragements, take courage; God himself will be a Light to them.I was also upright before him,.... In heart and conversation, being sincere and faithful; so David was in the sight of God; but this is much more true of Christ, in whom there was no unrighteousness nor guile, neither in his heart, nor in his lips; he was of perfect integrity, and faithful in all things to him that appointed him;

and I kept myself from mine iniquity; which some interpret of original sin, in which David was born, which dwelt in him, and prompted him to sin; but rather it refers to the taking away of Saul's life, which he might be tempted to do, as being his enemy that sought his life; and which he was put upon and urged to by some about him, and yet did it not. But it is best here also to apply these words to Christ; for though he had no iniquity of his own, yet he had the iniquities of his people on him, as their surety, and which he calls "mine", Psalm 40:12. But though he bore them, he did not commit any of them; though he was made sin, he knew none; and though he was tempted by Satan to the most enormous iniquities, as destroying himself and worshipping the devil, he kept himself from the evil one, that he could not touch him: the sense is, that he kept himself from committing any sin, which cannot be said of any mere man; and so far as good men are kept from sin, they are kept by the power of God, and not by themselves. All these things show, that the righteousness of Christ was a perfect, sinless one, entirely agreeable to the laws, statutes, and judgments of God; was pure in the sight of God, and rewardable in strict justice. Hence it is repeated as follows: