Ecclesiastes 10:15 The labor of fools wearies every one of them; for he doesn't know how to go to the city. (WEB NAS RSV NIV)
Ecclesiastes 12:12 And furthermore, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh. (See NIV)
Isaiah 16:12 It will happen that when Moab presents himself, when he wearies himself on the high place, and comes to his sanctuary to pray, that he will not prevail. (WEB NAS RSV)