Charles H. Spurgeon on Psalms 119:102

I have not departed from thy judgments: for thou hast taught me. They are well taught whom God teaches. What we learn from the Lord we never forget. God's instruction has a practical effect we follow his way when he teaches us; and it has an abiding effect, we do not depart from holiness. Read this verse in connection with the preceding and you get the believer's "I have, "and his "I have not": he is good both positively and negatively. What he did, namely, "refrained his feet, "preserved him from doing that which otherwise he might have done, namely, "departed from thy judgments." He who is careful not to go an inch aside will not leave the road. He who never touches the intoxicating cup will never be drunk. He who never utters an idle word will never be profane. If we begin to depart a little we can never tell where we shall end. The Lord brings us to persevere in holiness by abstinence from the beginning of sin; but whatever be the method he is the worker of our perseverance, and to him be all the glory.