I. The Psalmist was certainly of a different opinion from nine persons out of ten of every country, every age, and every religion. For he says, "Before I was troubled I went wrong: but now have I kept Thy word," whereas nine people out of ten would say to God, if they dared, "Before I was troubled I kept Thy word; but now that I am troubled, of course I cannot help going wrong." The general opinion of the world is that right-doing, justice, truth, and honesty are very graceful luxuries for those who can afford them, very good things when a man is easy, prosperous, and well-off, and without much serious business on hand, but not for the real hard work of life, not for times of ambition and struggle, any more than of distress and anxiety or of danger and difficulty.
II. What the special trouble was in which the Psalmist found himself, we are not told. But it is plain from his words that it was just that very sort of trouble in which the world is most ready to excuse a man for lying, cringing, plotting, and acting on the old devil's maxim that "cunning is the natural weapon of the weak." His honour and his faith were sorely tried. The ungodly laid wait to destroy him. But against them all he had but one weapon and one defence. However much afraid he might be of his enemies, he was still more afraid of doing wrong. His only safety was in pleasing God, and not men. This man had one precious possession, which he determined not to lose, not though he died in trying to hold it fast; namely, the Eternal Spirit of God, the Spirit of righteousness, and truth, and justice, which leads men into all truth. By that Spirit he saw into the eternal laws of God. By that Spirit he saw that his only hope was to keep those eternal laws. By that Spirit he vowed to keep them. By that Spirit when he failed he tried again; when he fell he rose and fought on once more to keep the commandments of the Lord.
C. Kingsley, Westminster Sermons,p. 142.
Reference: Psalms 119:67. F. Tholuck, Hours of Devotion, p. 178.