MEM. O how love I thy law! it is my meditation {a} all the day.

(a) He shows that we cannot love God's word unless we exercise ourselves in it and practise it.

Jamieson-Fausset-Brown Bible Commentary

MEM. (Ps 119:97-104).

97. This characteristic love for God's law (compare Ps 1:2) ensures increase.

Matthew Henry's Concise Commentary

119:97-104 What we love, we love to think of. All true wisdom is from God. A good man carries his Bible with him, if not in his hands, yet in his head and in his heart. By meditation on God's testimonies we understand more than our teachers, when we understand our own hearts. The written word is a more sure guide to heaven, than all the fathers, the teachers, and ancients of the church. We cannot, with any comfort or boldness, attend God in holy duties, while under guilt, or in any by-way. It was Divine grace in his heart, that enabled the psalmist to receive these instructions. The soul has its tastes as well as the body. Our relish for the word of God will be greatest, when that for the world and the flesh is least. The way of sin is a wrong way; and the more understanding we get by the precepts of God, the more rooted will be our hatred of sin; and the more ready we are in the Scriptures, the better furnished we are with answers to temptation.

Matthew Henry's Whole Bible Commentary

Verse 97

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.