Ecclesiastes 3:18; Ecclesiastes 9:12; Ecclesiastes 12:12

Ecclesiastes 3:18

18 I said in mine heart concerning the estate of the sons of men, that God might manifest them, and that they might see that they themselves are beasts.

Ecclesiastes 9:12

12 For man also knoweth not his time: as the fishes that are taken in an evil net, and as the birds that are caught in the snare; so are the sons of men snared in an evil time, when it falleth suddenly upon them.

Ecclesiastes 12:12

12 And further, by these, my son, be admonished: of making many books there is no end; and much study is a weariness of the flesh.