And now also the ax is laid unto the root of the trees: therefore every tree which brings not forth good fruit is hewn down, and cast into the fire.
All Commentaries on Matthew 3:10 Go To Matthew 3
Theophylact of Ochrid
AD 1107
The axe means the judgement of Christ, and the trees stand for each one of us. Therefore he who has not believed, and thus is rooted only in himself, is now and henceforward being cut down and cast into gehenna.
even though descended from Abraham,
He did not say, "which hath not brought forth," but "which bringeth not forth," for one must continually be bringing forth fruit. For if you gave alms yesterday but today you are greedy and grasping, you are not pleasing to God.
The fire, that is, of gehenna.