The iron, to wit, the axe whereby he cut the wood, in the former verse, which by the danger there mentioned may be supposed to be sharp; but now, saith he, if it happen to be blunt. Put to more strength; which is necessary to make it cut. But wisdom is profitable to direct, Heb. and wisdom, &c. And as wisdom instructs a man in the smallest matters, as in this very matter of cutting of wood, where it teaches him in this case to use his utmost strength; so it is useful for a man's direction in all his great and weighty affairs. And so he insensibly slides into the commendation of wisdom, and the censure of folly, which is the principal design and business of this chapter.
Related Commentaries of Ecclesiastes 10:10
Ecclesiastes 10:10
10 If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom is profitable to direct.