Matthew 23:16 - Ellicott's Commentary On The Whole Bible

Whosoever shall swear by the temple. — On the general teaching of the Pharisees as to oaths, see Notes on Matthew 5:33-37. It is not easy to trace the currents of thought that run through a corrupt casuistry, but probably the line of reasoning that led to this distinction was that the “gold of the Temple” — not the gold used in its structural ornamentation, but that which in coin or bullion was part of the Corban, or sacred treasure (Matthew 15:5) — had received a more special consecration than the fabric, and involved, therefore, a higher obligation, when used as a formula jurandi, than the Temple or the altar. Something of the same feeling is seen in the popular casuistry which makes the binding force of an oath depend on “kissing the Book;” or that of mediæval Christendom, which saw in the relics of a saint that which was more sacred than the Gospels. The principle involved in our Lord’s teaching goes further than its immediate application, and sweeps away the arbitrary distinction of different degrees of sanctity in the several parts of the same structure. Here the line of reasoning is, as in Matthew 5:33-37, that the Temple includes the altar, that the altar includes the gift, that the heaven includes the Throne, and that thus every oath-formula runs up, explicitly or implicitly, into the great thought of God.