Ecclesiastes 9:13-15

¹³Also in this manner have I seen wisdom under the sun, and it seemed great unto me:

¹⁴There was a little city, and the men therein were few; and there came against it a great king, who enclosed it, and built around it great works of siege;

¹⁵But there was found in it a poor wise man, and he delivered the city by his wisdom; yet no man had thought of that same poor man.