NET

10 Even now the ax is laid at the root of the trees, and every tree that does not produce good fruit will be cut down and thrown into the fire.

Darby

10 And already the axe is applied to^D6645 the root of the trees; every tree therefore not producing^D6646 good fruit is cut down and cast into the fire.

Darby Bible Notes

to - I so translate, because 'laid to' implies actual execution. perhaps not meant so by the translators, but merely to be as literal as possible. but 'applied to' ('to,' pros. see ch. 21.1) is more the moral way of acting – something more than 'set for' ('for,' eis) as in Luke 2.34; Phil.1.16; 1Thess.3.3. producing - Present tense; it is characteristic. see ch. 1.19.

KJV

10 And now also the axe is laid unto the root of the trees: therefore every tree which bringeth not forth good fruit is hewn down, and cast into the fire.