I have more insight than all my teachers, For Your testimonies are my meditation.
NASB95
I have more understanding than all my teachers, for your testimonies are my meditation.
ESV
I have more understanding than all my teachers: for thy testimonies are my meditation.
KJV

What a fruitful harvest did David reap from his glowing love, and "daily meditation on the law of God!" He became wiser than his enemies in "subtlety"—than all his teachers in doctrine—than the ancients in experience. Yet he is not speaking of his extraordinary gifts as a prophet, but of his knowledge gained by ordinary means. Nor is he here boasting of his own attainments: but commending the grace of God in and towards him—You through Your commandments have made me wiser. How much more wisdom does the persecuted believer draw from the word of God, than his persecutors have ever acquired from the learning of this world! Those, however, who have been effectually taught of God, need to be daily taught of Him. While they rest upon their God, and seek counsel in His word, they are wise indeed; yet when they trust to their own wisdom, and turn to their own counsel, they become a bye-word and occasion of offence by their own folly. Was David wiser than his enemies or his teachers, when he dissembled himself before Achish—or when he yielded to the indulgence of lust—or when in the pride of his heart he numbered the people? Alas! how often do even God's children befool themselves in the ways of sin!

But how did David attain this Divine wisdom? Not by habits of extensive reading—not by natural intelligence—but by a diligent meditation in the testimonies. In order to avail ourselves, however, of this means—a simple reception of the Divine testimony is of absolute importance. We can never obtain that assurance of the certainty of our faith, which is indispensable to our peace, or resist the influence of unenlightened teachers, or the long-established worldly maxims of the ancients, except by entire submission to the supreme authority of Scripture. Many sincere Christians—especially at the outset of their course—are much hindered—either by the skepticism of others, or of their own minds; or from their previous habit of studying the Bible in the light of carnal wisdom, or in dependence upon human teaching. Such need special prayer for humility of mind and simplicity of faith. Under this gracious influence they will discern that path to glory, which in infinite condescension is made so plain, that "the wayfaring men, though fools, shall not err therein," and the unlearned believer, who has the word before his eyes, in his heart, and in his life, shall become "perfect, thoroughly furnished unto all good works."

In our Christian progress, David's habit of scriptural meditation will prove of essential service. For while those who "confer with flesh and blood" cannot have their counselors always at hand; we, seeking our wisdom from the word of God, have the best Counselor ever with us, teaching us what to do, and what to expect. Obedience also, as well as meditation, directs our way. David found understanding, because he kept the precepts. And David's Lord has pointed out the same path of light: "If any man will do God's will, he shall know of the doctrine." "You meet him who rejoices, and works righteousness—those that remember You in Your ways." Your ways truly are ways of light, joy, and love!

Now let us turn in, and inquire—What is our daily use of the word of God? Are we satisfied with a slight looking, or do we seek an intimate acquaintance with it! Is its influence ever present—ever practical? Do we prize it as a welcome guest? Is it our delightful companion and guide? Oh! meditate in this blessed book. "Eat the word," when you "have found it; and it will be unto you the joy and rejoicing of your heart." The name of Jesus—its great subject—will be more precious—your love will be inflamed—your perseverance established—and your heart enlivened in the spirit of praise. Thus bringing your mind into close and continual contact with the testimonies of God, and pressing out the sweetness from the precious volume, it will drop as from the honeycomb, daily comfort and refreshment upon your heart.

"I have more understanding than all my teachers." That which the Lord had taught him had been useful in the camp, and now he finds it equally valuable in the schools. Our teachers are not always to be trusted; in fact, we may not follow any of them implicitly, for God will call us to account for the use of our understandings. When even our pilot errs, it behooves us to follow closely the chart of the Word of God, that we may be able to save the vessel. If our teachers are in all things sound and safe, they will be right glad for us to excel them, and they will be the first to own that the teaching of the Lord is better than any teaching which they can give us. Disciples of Christ who sit at his feet are often better skilled in divine things than doctors of divinity.

"For your testimonies are my meditation." Meditation upon the Scripture itself is the best mode of acquiring understanding. We may hear the wisest teachers and remain fools, but if we meditate upon the sacred word we must become wise. There is more wisdom in the testimonies of the Lord than in all the teachings of men if they were all gathered into one vast library. The Book of books outweighs all the rest.

David does not hesitate to speak the truth in thi9 place concerning himself, even though it is to his own honor, for he is quite innocent of self-consciousness. In speaking of his "understanding" he means to extol the law and the Lord, and not himself. There is not a grain of boasting in these bold expressions, but only a childlike desire to set forth the excellence of the Lord's word. He who knows the truths taught in the Bible will be guilty of no egotism if he believes himself to be possessed of more important truth than all the agnostic professors in the universe.