Charles H. Spurgeon on Psalms 119:93

I will never forget thy precepts: for with them thou hast quickened me. When we have felt the quickening power of a precept we never can forget it. We may read it, learn it, repeat it, and think we have it, and yet it may slip out of our minds; but if it has once given us life or renewed that life, there is no fear of its falling from our recollection. Experience teaches, and teaches effectually. How blessed a thing it is to have the precepts written on the heart with the golden pea of experience, and graven on the memory with the divine stylus of grace. Forgetfulness is a great evil in holy things; we see here the man of God fighting against it, and feeling sure of victory because he knew the life giving energy of the word in his own soul. That which quickens the heart is sure to quicken the memory.

It seems singular that he should ascribe quickening to the precepts, and yet it lies in them and in all the words of the Lord alike. It is to be noted that when the Lord raised the dead he addressed to them the word of command. He said, "Lazarus, come forth, " or "Maid, arise." We need not fear to address gospel precepts to dead sinners, since by them the Spirit gives them life. Remark that the Psalmist does not say that the precepts quickened him, but that the Lord quickened him by their means: thus he traces the life from tile channel to the source, and places the glory where it is due. Yet at the same time he prized the instruments of the blessing, and resolved never to forget them. He had already remembered them when he likened himself to a bottle in the smoke, and now he feels that whether in the smoke or in the fire the memory of the Lord's precepts shall never depart from him.