Nor will he cherish hopes that fail, nor desires that when accomplished, are bitter of taste. To give heed to the commandments is the condition of learning them and recognising how righteous they are; and such learning makes the learner's heart righteous like them, and causes it to run over in thankfulness for the boon of knowledge of God's will. By all these thoughts the psalmist is brought to his fixed resolve in ver. 8, to do what God meant him to do when He gave the Law; and what the singer had just longed that he might be able to do--namely, to observe the statutes. But in his resolve he remembers his weakness, and therefore he glides into prayer for that Presence without which resolves are transient and abortive. § ב 9 Wherewith shall a young man cleanse his path? By taking heed, according to Thy word. 10 With my whole heart have I sought Thee, Let me not wander from Thy commandments. 11 In my heart have I hid Thy saying, That I may not sin against Thee. 12 Blessed art Thou, Jehovah, Teach me Thy statutes. 13 With my lips have I rehearsed All the judgments of Thy mouth. 14 In the way of Thy testimonies have I rejoiced, As over all [kinds of] wealth. 15 In Thy precepts will I meditate, And will have respect to all Thy paths. 16 In Thy statutes will I delight myself, I will not forget Thy word. The inference drawn from ver. 9, that the psalmist was a young man, is precarious. The language would be quite as appropriate to an aged teacher desirous of guiding impetuous youth to sober self-control. While some verses favour the hypothesis of the author's youth (ver. 141, and perhaps vv. 99, 100), the tone of the whole, its rich experience and comprehensive grasp of the manifold relations of the Law to life, imply maturity of years and length of meditation. The psalm is the ripe fruit of a life which is surely past its spring. But it is extremely questionable whether these apparently personal traits are really so. Much rather is the poet "thinking ... of the individuals of different ages and spiritual attainments who may use his works" (Cheyne, _in loc._). The word rendered "By taking heed" has already occurred in vv. 4, 5 ("observe"). The careful study of the Word must be accompanied with as careful study of self. The object observed there was the Law; here, it is the man himself. Study God's law, says the psalmist, and study Thyself in its light; so shall youthful impulses be bridled, and the life's path be kept pure. That does not sound so like a young man's thought as an old man's maxim, in which are crystallised many experiences.