Eclesiastés 10
Douay-Rheims Challoner (1752)
10If the iron be blunt, and be not as before, but be made blunt, with much labour it shall be sharpened: and after industry shall follow wisdom.
Reina-Valera 1909
10Si se embotare el hierro, y su filo no fuere amolado, hay que añadir entonces más fuerza: empero excede la bondad de la sabiduría.
King James Version
10If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom is profitable to direct.
World English Bible
10If the ax is blunt, and one doesn’t sharpen the edge, then he must use more strength; but skill brings success.