CHROMATIUS:
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.1