8. But while man thankfully enjoys life, "let him remember" it will not last for ever. The "many days of darkness," that is, the unseen world (Job 10:21, 22; Ps 88:12), also days of "evil" in this world (Ec 11:2), are coming; therefore sow the good seed while life and good days last, which are not too long for accomplishing life's duties.
All that cometh—that is, All that followeth in the evil and dark days is vain, as far as work for God is concerned (Ec 9:10).