Homilies on the Epistle to the Hebrews

For, he says, “He that has despised Moses' law dies without mercy, under two or three witnesses.” “Without mercy,” he says; so that there is no pardon, no pity there although the law is of Moses; for he ordained the most of it.

What is “under two or three”? If two or three bore witness, he means, they immediately suffered punishment.