Origen
Catena Aurea · Matthäusevangelium 23
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! Ye fools and blind: for whether is greater, the gold, or the temple that sanctifieth the gold? And, Whosoever shall swear by the altar, it is nothing; but whosoever sweareth by the gift that is upon it, he is guilty. Ye fools and blind: for whether is greater, the gift, or the altar that sanctifieth the gift? Whoso therefore shall swear by the altar, sweareth by it, and by all things thereon. And whoso shall swear by the temple, sweareth by it, and by him that dwelleth therein. And he that shall swear by heaven, sweareth by the throne of God, and by him that sitteth thereon.
Now an oath is in confirmation of somewhat that has been spoken. The oath here then may signify testimony of Scripture which we produce in confirmation of that word which we speak. So that Divine Scripture is the temple of God, the gold is the meaning which it contains. As the gold which is outside the Temple is not sanctified, so all thoughts which are without divine Scripture, however admirable they may seem, are not hallowed. We ought not therefore to bring any speculations of our own for the confirmation of doctrine, unless such as we can shew are hallowed by being contained in divine Scripture. The altar is the human heart, which is the chief thing in man. The offerings and gifts that are hid upon the altar, are every thing which are done in the heart, as to pray, to sing, to do alms, to fast. Every offering of a man then is sanctified by his heart, by which the offering is made. There cannot therefore be a more honourable offering than the heart of man, out of which the offering proceeds. If then one’s conscience does not smite him, he has confidence towards God, not by reason of his gifts, but so to speak because he has rightly ordered the altar of his heart. Thirdly, we may say that over the temple, that is over every Scripture, and over the altar, that is over every heart, there is a certain meaning which is called the Heaven, the throne of God Himself, in which we shall be able to see the things that are revealed face to face, when that which is perfect is come.