Ecclesiastes 1:13; Ecclesiastes 1:12; Ecclesiastes 1:9-11

13 I applied my mind to study and to explore by wisdom all that is done under the heavens. What a heavy burden God has laid on mankind!
12 I, the Teacher, was king over Israel in Jerusalem.
9 What has been will be again, what has been done will be done again; there is nothing new under the sun. 10 Is there anything of which one can say, “Look! This is something new”? It was here already, long ago; it was here before our time. 11 No one remembers the former generations, and even those yet to come will not be remembered by those who follow them.