A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit. Every tree that bringeth not forth good fruit is hewn down, and cast into the fire. Wherefore by their fruits ye shall know them.

The Bible (The New Testament) (AD 1st - 2nd C) Christian sacred scripture

Matthew 7:18–20 (KJV)

Alt. trans.:
• "A healthy tree cannot bear bad fruit, and a poor tree cannot bear good fruit. And any tree that does not bear good fruit is cut down and thrown in the fire. So then, you will know the false prophets by what they do." (GNT)
• "A good tree cannot bear bad fruit, nor can a bad tree bear good fruit. Every tree that does not bear good fruit is cut down and thrown into the fire. Thus you will know them by their fruits." (NRSV)