A good tree cannot bring forth evil fruit, neither [can] a corrupt tree bring forth good fruit.
Οὐ δύναται δένδρον ἀγαθὸν καρποὺς πονηροὺς ποιεῖν, οὐδὲ δένδρον σαπρὸν καρποὺς καλοὺς ποιεῖν.