Here is, 1. David's petition for divine instruction: "Teach me thy statutes; give me to know all my duty; when I am in doubt, and know not for certain what is my duty, direct me, and make it plain to me; now that I am afflicted, oppressed, and my eyes are ready to fail for thy salvation, let me know what my duty is in this condition." In difficult times we should desire more to be told what we must do than what we may expect, and should pray more to be led into the knowledge of scripture-precepts than of scripture-prophecies. If God, who gave us his statutes, do not teach us, we shall never learn them. How God teaches is implied in the next petition: Give me understanding (a renewed understanding, apt to receive divine light), that I may know thy testimonies. It is God's prerogative to give an understanding, that understanding without which we cannot know God's testimonies. Those who know most of God's testimonies desire to know more, and are still earnest with God to teach them, never thinking they know enough. 2. His pleas to enforce this petition. (1.) He pleads God's goodness to him: Deal with me according to thy mercy. The best saints count this their best plea for any blessing, "Let me have it according to thy mercy;" for we deserve no favour from God, nor can we claim any as a debt, but we are most likely to be easy when we cast ourselves upon God's mercy and refer ourselves to it. Particularly, when we come to him for instruction, we must beg it as a mercy, and reckon that in being taught we are well dealt with. (2.) He pleads his relation to God: "I am thy servant, and have work to do for thee; therefore teach me tod o it and to do it well." The servant has reason to expect that, if he be at a loss about his work, his master should teach him, and, if it were in his power, give him an understanding. "Lord," says David, "I desire to serve thee; show me how." If any man resolve to do God's will as his servant, he shall be made to know his testimonies, Joh 7:17; Psa 25:14.

PE.--The Seventeenth Part.

PE. Thy testimonies are wonderful,.... The Scriptures, which testify of God, his mind and will, are wonderful both with respect to the author of them, the things contained in them, and the use and advantage of them. They give an account of the wonderful works of creation; of their author and matter; of the manner, order, and time of their being wrought: they relate many wonderful events of Providence, both in a way of mercy and judgment; they declare several surprising miracles, wrought by Moses and others, and exhibit many marvellous things in types and figures: are full of prophecies of extraordinary things, have been exactly accomplished, and contain many exceeding great and precious promises; and abound with doctrines abstruse and recondite, hid from the carnal sense and reason of men; the mysteries of the Gospel, and of the grace of God, such as respect the divine Persons in the Trinity; the person and grace of Christ; the wonderful love of God and Christ towards men; the amazing blessings of grace through him, the resurrection of the dead, and eternal life by him;

therefore doth my soul keep them; as a rich treasure, which he laid up in the cabinet of his heart, and preserved as what was most rare and valuable: and such are the wonderful things in the word of God; and such is the efficacy of its doctrines, and the influence the truths of it have upon the minds of gracious persons; that these engage them to keep and observe the precepts it enjoins, and that heartily and sincerely, with their whole spirit and soul.