It is now easy to understand how suitably the Prophet had led the priests and the whole people to see this difference. For if he had abruptly said this to them—that no work pleased God, except the doer himself had been cleansed from every defilement, there would have arisen immediately many disputations: “Why will God reject what is in itself worthy of praise? When one observes chastity, when another liberally lays out a part of his
property, when a third devotes himself wholly to promote the good of the public, when magnanimity and firmness shine forth in one, when another cultivates the liberal arts—are not these such virtues as deserve some measure of praise!” Thus a great glamour would have been raised among the people, had not Haggai made this kind of preface—that according to the law what is unclean is not sanctified by the touch of holy flesh, and also that whatever is touched by an unclean person is polluted.
What the law then prescribed in its rituals silenced all those clamours, which might have immediately arisen among the people. Moreover, though ceremonies have now ceased and are no longer in use, yet what God has once declared still retains its force—that whatever we touch is polluted by us, except there be a real purity of heart to sanctify our works.