Matthew 7:18

18Notοὐis ableδύναταιa treeδένδρονgoodἀγαθὸνfruitsκαρποὺςbadπονηροὺςto produceποιεῖν,norοὐδὲa treeδένδρονbadσαπρὸνfruitsκαρποὺςgoodκαλοὺςto produceποιεῖν.

A good tree is not able to produce evil fruits, nor a rotten tree to produce good fruits.