Ecclesiastes 10:6-10

English Standard Version

⁸ He who ^(D)digs a pit will fall into it,
    and ^(E)a serpent will bite him who breaks through a wall.
^9 (F)He who quarries stones is hurt by them,
    and he who ^(G)splits logs is endangered by them.
¹⁰ If the iron is blunt, and one does not sharpen the edge,
    he must use more strength,
    but wisdom helps one to succeed.^[a]