Matthew 5:33
Douay-Rheims
Again you have heard that it was said to them of old, Thou shalt not forswear thyself: but thou shalt perform thy oaths to the Lord.
John Chrysostom (attributed)
For no man can swear often, but he must sometimes forswear himself; as he who has a custom of much speaking will sometimes speak foolishly.
Source details
as excerpted in the Catena Aurea on Matthew 5:33-37
Imported from an open dataset — not yet checked against the printed edition.