ESV: If the iron is blunt, and one does not sharpen the edge, he must use more strength, but wisdom helps one to succeed.
NIV: If the ax is dull and its edge unsharpened, more strength is needed, but skill will bring success.
NASB: If the axe is dull and he does not sharpen its edge, then he must exert more strength. Wisdom has the advantage of bringing success.
CSB: If the ax is dull, and one does not sharpen its edge, then one must exert more strength; however, the advantage of wisdom is that it brings success.
NLT: Using a dull ax requires great strength, so sharpen the blade. That’s the value of wisdom; it helps you succeed.
KJV: 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.
NKJV: If the ax is dull, And one does not sharpen the edge, Then he must use more strength; But wisdom brings success.
