Bede, on Prov 12:17

“He that speaketh that which he knoweth, sheweth forth justice: but he that lieth, is a deceitful witness.”

“There is one who promises, etc. Some promise obedience to the truth, but when frightening or tempting trial provides an obstacle, they desert what they had begun, but their conscience pricks them as with a sword for their promise.”

Imported from an open dataset — not yet checked against the printed edition.