If it bears fruit next year, fine. But if not, you can cut it down.’”
This parable is intended to enforce that word of warning immediately going before, "Except ye repent, ye shall all likewise perish; except you be reformed, you will be ruined, as the barren tree, except it bring forth fruit, will be cut down." I. This parable primarily refers to the nation and people of the Jews.
Commenting on Luke 13:6-9
And if it bear fruit, well,.... If hereby barren professors, as the Jews, become fruitful, it is well, a good thing is done; it is well for themselves, they shall eat the fruit of their doings; it is well for the churches where they are, for good works are profitable to men; and it is well for the owner of the vineyard, and the dresser...
if . . . fruit, well--Genuine repentance, however late, avails to save (Luk 23:42-43). after that, &c.--The final perdition of such as, after the utmost limits of reasonable forbearance, are found fruitless, will be pre-eminently and confessedly just (Pro 1:24-31; Eze 24:13).