“Either make the tree good, and his fruit good; or else make the tree corrupt, and his fruit corrupt: for the tree is known by his fruit.”
King James Version (KJV)
12:33 Either make the tree good and its fruit good: or make the tree corrupt and its fruit corrupt - That is, you must allow, they are both good, or both bad. - For if the fruit is good, so is the tree; if the fruit is evil, so is the tree also. For the tree is known by its fruit - As if he had said, Ye may therefore know me by my fruits. By my converting sinners to God, you may know that God hath sent me. #Mt 7:16|; Luke 6:43.
Mt 12:33 Either make the tree good, and its fruit good. The principle is announced in Mt 7:20 that the tree is known by its fruits. If his own life and works were evil, then he might be evil and aided by Satan, but if good, then his power was from God.