Here is, 1. David's inexpressible love to the word of God: O how love I thy law! He protests his affection to the word of God with a holy vehemency; he found that love to it in his heart which, considering the corruption of his nature and the temptations of the world, he could not but wonder at, and at that grace which had wrought it in him. He not only loved the promises, but loved the law, and delighted in it after the inner man. 2. An unexceptionable evidence of this. What we love we love to think of; by this it appeared that David loved the word of God that it was his meditation. He not only read the book of the law, but digested what he read in his thoughts, and was delivered into it as into a mould: it was his meditation not only in the night, when he was silent and solitary, and had nothing else to do, but in the day, when he was full of business and company; nay, and all the day; some good thoughts were interwoven with his common thoughts, so full was he of the word of God.

I have refrained my feet from every evil way,.... Of error or immorality, forbidden and condemned by the word of God; every way that is evil in itself, or leads to evil, and in which evil men walk; and though there may be many snares and temptations to walk in such a way, yet a good man cannot allow himself to walk therein, as others do; he has not so learned the word of God; he is under the influence of divine grace, and withholds himself from it; he abstains from all appearance of evil, and lays a restraint, as upon his mouth and lips, so upon his feet, or guards his walk and conversation. This shows, that as David had an affection for the word of God, and made great proficiency in knowledge by it; so it had an influence on his life and conversation, and his knowledge appeared to be not merely speculative, but practical: his end, in laying such a restraint upon his feet, was not out of vain glory, and to gain popular applause nor through fear of losing his credit among men, nor of the wrath of God; but out of love to God, and to his word, as follows:

that I might keep thy word; such was his love to it, and his regard to the honour of it; considering whose word it was, and with whose authority it was clothed, and whose glory was concerned therein; that he was careful to walk according to it, and in the way that directed to, and shun every other way.