Charles H. Spurgeon on Psalms 119:128

The upright man squares all his actions by a right rule: carnal reason cannot bias him, corrupt practice cannot sway him, but God's sacred word directs him. Hence it is that his respect is universal to all divine precepts, avoiding all evil, performing all good without exception. Thus David's upright man here esteems God's precepts concerning all things to be right, and therefore is careful to observe them. Hence it is, that he is the same man at all times, in all places; because at all times, and in all societies, he acts by one and the same rule. It is a good saying of S. Cyprian, "ea non est religio, sed dissimulatio, quce per omnia non constat sibi", that is not piety, but hypocrisy, that is not in all things like itself, since the upright man measures every action by the straight line of divine prescript. Abraham Wright.