Matthew 23:3

All therefore whatsoever they shall say. St. Augustine, in his defence of the Apostolic See, thus argues, contra lit. Petil. "Why dost thou call the apostolic chair the chair of pestilence? If, for the men that sit therein, I ask: did our Lord Jesus Christ, on account of the Pharisees, reflect upon the chair, wherein they sat? Did he not commend that chair of Moses, and, preserving the honour of the chair, reprove them? For he sayeth: they have sat on the chair of Moses. All therefore whatsoever they shall say to you, observe and do. These points if you did well consider, you would not, for the men whom you defame, blaspheme the Apostolic See, wherewith you do not hold communion." (lib. ii. chap. 51) And again, chap. 61 Ibid. "Neither on account of the Pharisees, to whom you maliciously compare us, did our Lord command the chair of Moses to be forsaken; (in which chair he verily figured his own) for he warned the people to do what they say, and not what they do, and that the holiness of the chair be in no case forsaken, nor the unity of the flock divided, on account of the wicked lives of the pastors." --- Christ does not tell them to observe every thing, without exception, that the Pharisees should say to them; for, (as it was observed in a previous chapter) many superstitions and false ordinances had obtained amongst them, corrupting the Scriptures by their traditions; but only such as were not contrary to the law of Moses. We are taught to obey bad no less than good ministers, in those things that are not expressly contrary to the law of God. Hence appears how unfounded and unreasonable is the excuse so often adduced by persons in justification of their misdeeds, viz. that they saw their pastors do the same. Such must attend to the rule here given by Jesus Christ. What they say, do: but according to their works, do ye not. (Denis the Carthusian) --- The words, all whatsoever, shew that nothing must be excepted, but what the supreme law orders to be excepted. (Estius)