Luke
Luke 6:43BSB·traditional attribution

No good tree bears bad fruit, nor does a bad tree bear good fruit.

John Calvin Reformed @genevareformer

Luke 6:43. For the tree is not good This statement, as related by Luke, appears to be a general instruction given by Christ, that by the fruits our opinion of every man ought to be formed, in the same manner as a tree is known by its fruit After having inserted the reproof to hypocrites, who “perceive a straw in the eye of another, but...

Matthew Henry Presbyterian @wholebiblehenry

All these sayings of Christ we had before in Matthew; some of them in ch. 7, others in other places. They were sayings that Christ often used; they needed only to be mentioned, it was easy to apply them. Grotius thinks that we need not be critical here in seeking for the coherence: they are golden sentences, like Solomon's proverbs or parables. Let us observe here, I.

Commenting on Luke 6:37-49

John Gill Reformed Baptist @doctorgill

For every tree is known by its own fruit,.... Good and bad preachers are known by their doctrines, the one being agreeable, the other disagreeable to the word of God; and good and bad men are known by their lives and conversations: the grace of God revealed to good men, and wrought in them, teaches them to live soberly, righteously, and godly; a holy life...