Either be a healthy tree and produce wholesome fruit, or be a diseased tree and produce rotten fruit, for [the quality of] a tree will be recognized by [the quality of] its fruit.

Upon seeing a fig tree along side of the road, He approached it [i.e., expecting to find fruit on it], but found nothing but leaves. He said to the tree, "There will not be fruit on you ever again." Immediately the fig tree withered up.

In a similar way, every healthy tree produces wholesome fruit; but a diseased tree produces [only] bad fruit.

A healthy tree cannot produce bad fruit and neither can a diseased tree produce wholesome fruit.

And even now the axe is ready to chop down the trees [i.e., you Jewish people]. Every tree [i.e., person] that does not produce wholesome fruit [i.e., godly, repentant lives] will be cut down and thrown into the fire [i.e., the final punishment of the wicked].