Ecclesiastes 10:10; Ecclesiastes 11:6

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.

Ecclesiastes 11:6

6 In the morning sow thy seed, and in the evening withhold not thine hand: for thou knowest not whether shall prosper, either this or that, or whether they both shall be alike good.