But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these comes from evil.
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Glossa Ordinaria
AD 1480
Non occ.: The Lord has hitherto taught to abstain from injuring our neighbour, forbidding anger with murder, lust with adultery, and the putting away a wife with a bill of divorce. He now proceeds to teach to abstain from injury to God, forbidding not only perjury as an evil in itself, but even all oaths as the cause of evil, saying, “Ye have heard it said by them of old, Thou shalt not forswear thyself.”