What is the meaning of Matthew 23:16-22?

16 Woe unto you, ye blind guides, which say, Whosoever shall swear by the temple, it is nothing; but whosoever shall swear by the gold of the temple, he is a debtor! 17 Ye fools and blind: for whether is greater, the gold, or the temple that sanctifieth the gold? 18 And, Whosoever shall swear by the altar, it is nothing; but whosoever sweareth by the gift that is upon it, he is guilty. 19 Ye fools and blind: for whether is greater, the gift, or the altar that sanctifieth the gift? 20 Whoso therefore shall swear by the altar, sweareth by it, and by all things thereon. 21 And whoso shall swear by the temple, sweareth by it, and by him that dwelleth therein. 22 And he that shall swear by heaven, sweareth by the throne of God, and by him that sitteth thereon. (Matthew 23:16-22 KJV)

William Burkitt’s Commentary

The fourth woe which our Saviour denounceth against Pharisees is for the false and erroneous doctrine concerning oaths.

1. They taught men to swear by the creatures.

2. They taught that some oaths made by the creatures were obligatory and binding, others not; particularly they affirmed, that if a man swear by the temple, or the altar, it was nothing; that is, he was not bound by such an oath: but if a man swear by the gold of the temple and the altar; that is, by the gifts offered to the corban, or treasury of the temple, and by the sacrifices and oblations on the altar; such an oath they affirmed was binding, because it was for their profit that the gifts on the altar, and the gold brought into the treasury, should be accounted most holy, seeing that would encourage the people to be more ready to contribute and offer.

This horrid hypocrisy and covetousness our blessed Saviour here sharply reproves, and shews, that oaths made by the creatures, though unlawful, yet being once made, did oblige, as if the parties had sworn by God himself. For he that swears by the temple, swears by it and him that dwelleth therein.

Learn, 1. That swearing by the creatures is no new sin, but as old as the Pharisees.

2. That swearing by the creatures is a great profanation of the name of God, and a mighty provocation to him.

3. That is notwithstanding, if the matter of such oaths be not sinful, they are obligatory and binding. He that sweareth by the creatures, sweareth indeed by the God of the creatures: for, says our Saviour, he that sweareth by the heavens, sweareth by the throne of God, and by him that sitteth thereon.