Charles H. Spurgeon on Psalms 119:168

I have kept thy precepts, etc. The Hebrew word yne, shamar, that is here rendered "kept, "signifies to keep carefully, diligently, studiously, exactly. It signifies to keep as men keep prisoners, and to keep as a watchman keeps the city or the garrison; yea, to keep as a man would keep his very life. But now mark what was the reason that David kept the precepts and the testimonies of the Lord so carefully, so sincerely, so diligently, so studiously, and so exactly. Why, the reason you have in the latter part of the verse, "for all my ways are before thee." O sirs! it is as necessary for him that would be eminent in holiness, to set the Lord always before him, as it is necessary for him to breathe. In that 31st of Job you have a very large narrative of that height and perfection of holiness that Job bad attained to, and the great reason that he gives you, for this is in the 4th verse, "Doth not he see my way, and count all my steps?" The eye of God had so strong an influence upon his heart and life, that it wrought him up to a very high pitch of holiness. Thomas Brooks.