But I say unto you, Swear not at all; neither by heaven; for it is God's throne:
All Commentaries on Matthew 5:34 Go To Matthew 5
Chromatius of Aquileia
AD 407
By the grace of gospel teaching, the law given by Moses acquired an advantage. The law prescribes that one must not swear falsely; but according to the gospel one must not swear at all. The Holy Spirit had seen fit to order this through Solomon when he said, “Do not accustom your mouth to oaths.” And again: “Even as a wellchastised servant is not deterred from envy, whoever swears and does business will not be purged from sin.” Therefore it is absolutely inappropriate for us to swear. What need is there for us to swear when we are not allowed to lie at all and our words must always be true and trustworthy, so much so that they may be taken as an oath? On this, the Lord not only forbids us to swear falsely but even to swear, lest we appear to tell the truth only when we swear and lest (while we should be truthful in our every word) we think it is all right to lie when we do not take an oath. For this is the purpose of an oath: Everyone who swears, swears to the fact what he is saying is true. Therefore the Lord does not want a gap between our oath and our ordinary speech. Even as there must be no faithlessness in an oath, in our words there must be no lie. For both false swearing and lying are punished with divine judgment, as the Scripture says: “The mouth that lies kills the soul.” So whoever speaks the truth swears, for it is written: “A faithful witness will not lie.” .
