Neither shall you swear by your head, because you can not make one hair white or black.
All Commentaries on Matthew 5:36 Go To Matthew 5
Chromatius of Aquileia
AD 407
These words of the Lord whereby he forbids us to swear by these different elements invite a double explanation. First, he wanted to draw us away from the use of oaths and the customs of human error, lest each of us through swearing by these elements accord a creature the honor of divine veneration or believe one has impunity in swearing falsely if one swears by the elements of the world. … It can also be explained in this way: When one swears by heaven and earth, one swears by him who made heaven and earth, as the Lord himself declared elsewhere: “He who swears by the altar swears by it and by all things that are on it; and he who swears by the temple swears by it and by him who dwells in it.” Jesus goes on to say, “nor by Jerusalem,” for it is the city of the great King, that is, the symbol of Christ’s body, which is the spiritual and heavenly church. “Neither shall you swear,” he says, “by your head,” for according to the apostle, “the head of every man is Christ.” Therefore the one who swears by these things makes reference to him who is the author of all these things. .
