John Lightfoot on Matthew 23:28

[Even so ye also outwardly appear righteous unto men.] Such kind of hypocrites are called distained, or coloured. Jannai the king, when he was dying, warned his wife that she should take heed of painted men, pretending to be Pharisees, whose works are as the works of Zimri, and yet they expect the reward of Phineas. The Gloss is "Those painted men are those whose outward show doth not answer to their nature; they are coloured without, but their inward part doth not answer to their outward; and their works are evil, like the works of Zimri; but they require the reward of Phineas, saying to men, That they should honour them as much as Phineas." They had forgotten their own axiom, A disciple of the wise, who is not the same within that he is without, is not a disciple of the wise.

[But within ye are full of hypocrisy and iniquity.] The masters themselves acknowledged this to their own shame. They inquire, what were those sins under the first Temple for which it was destroyed; and it is answered, "Idolatry, fornication, and bloodshed." They inquire, what were the sins under the second; and answer, "Hate without cause, and secret iniquity"; and add these words, "To those that were under the first Temple their end was revealed, because their iniquity was revealed: but to those that were under the second their end was not revealed, because their iniquity was not revealed." The Gloss, "They that were under the first Temple did not hide their iniquity; therefore their end was revealed to them: as it is said, 'After seventy years I will visit you in Babylon': but their iniquity under the second Temple was not revealed: those under the second Temple were secretly wicked."