The Teacher concludes that the best thing for humans is the be happy while we are alive, and find enjoyment in the activities of the day regardless of what they might be.
He affirms that God has ordained that everyone should take pleasure in their toil expressed in the daily life they have been given.
Perhaps that is why many find that the people who don’t have a lot of stuff can be some of the happiest people on the planet. He also affirms that the works of the Lord are eternal and that we can do nothing to add to or take away from them.
It is God who continues to initiate the events that endure in the poem at the beginning of this chapter. The daily toil of humans and even the frustrations that they bring are a part of His grand design for life on this planet!