133 The explanatory connective γάρ (gar) is often dropped from translations, but the point of the passage is that one should be self-corrective and be careful who one follows (vv. 41–42), because such choices also reflect what the nature of the tree is and its product.
134 Grk “rotten.” The word σαπρός, modifying both “fruit” and “tree,” can also mean “diseased” (L&N 65.28).
135 Most , especially later ones (A C D Θ Ψ 33 𝔐 lat sy sa), lack the adverb πάλιν (palin, “again”) here. Its presence is attested, however, by several good witnesses (𝔓75 א B L W Ξ f1, 13 579 892 1241 2542).

In other versions

“For no good tree bears bad fruit, nor again does a bad tree bear good fruit,

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

“A good tree doesn’t produce bad fruit; on the other hand, a bad tree doesn’t produce good fruit.

“A good tree can’t produce bad fruit, and a bad tree can’t produce good fruit.

“For there is no good tree that produces bad fruit, nor on the other hand a bad tree that produces good fruit,

For a good tree bringeth not forth corrupt fruit; neither doth a corrupt tree bring forth good fruit.

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