Even so every good tree brings forth good fruit; but a corrupt tree brings forth evil fruit.
All Commentaries on Matthew 7:17 Go To Matthew 7
Theophylact of Ochrid
AD 1107
The hypocrites are called thorns and thistles: they are like thorns in that they prick unexpectedly; they are like thistles in their cunning and deviousness. The corrupt tree is anyone who has been corrupted by a pleasure-loving and dissolute life.
