Ecclesiastes 9: an example of “wisdom under the sun” that’s wrong, uninformed by God’s revelation:

The same destiny ultimately awaits everyone, whether righteous or wicked, good or bad, ceremonially clean or unclean, religious or irreligious. Good people receive the same treatment as sinners, and people who make promises to God are treated like people who don’t. It seems so wrong that everyone under the sun suffers the same fate. Already twisted by evil, people choose their own mad course, for they have no hope.

There is nothing ahead but death anyway…The living at least know they will die, but the dead know nothing. They have no further reward, nor are they remembered. Whatever they did in their lifetime—loving, hating, envying—is all long gone. They no longer play a part in anything here on earth. (Ecclesiastes 9.2, 3, 5, 6, NLT)

After death nothing? Not quite: Jesus said the rich man will be held to account:

Finally, the poor man died and was carried by the angels to sit beside Abraham at the heavenly banquet. The rich man also died and was buried, and he went to the place of the dead. There, in torment, he saw Abraham in the far distance with Lazarus at his side. (Luke 16.22, 23, NLT)

Other revelation supports life (and judgment) after death.

And just as each person is destined to die once and after that comes judgment, so also Christ was offered once for all time as a sacrifice to take away the sins of many people. He will come again, not to deal with our sins, but to bring salvation to all who are eagerly waiting for him. (Hebrews 9.27, 28, NLT)

In the middle of this, a piece of not bad advice, not because there won’t be a judgment but because we should make the most of our life:

So go ahead. Eat your food with joy, and drink your wine with a happy heart, for God approves of this! Wear fine clothes, with a splash of cologne! Live happily with the woman you love through all the meaningless days of life that God has given you under the sun. The wife God gives you is your reward for all your earthly toil. Whatever you do, do well. For when you go to the grave, there will be no work or planning or knowledge or wisdom. (Ecclesiastes 9.7 – 10, NLT)

There certainly won’t be work or planning here on earth after death.

The Apostle Paul tells us there is certainly a resurrection and he ends with the same application as in Ecclesiastes 9: make the most of your time here:

For our dying bodies must be transformed into bodies that will never die; our mortal bodies must be transformed into immortal bodies. Then, when our dying bodies have been transformed into bodies that will never die, this Scripture will be fulfilled:

“Death is swallowed up in victory. O death, where is your victory? O death, where is your sting?” For sin is the sting that results in death, and the law gives sin its power. But thank God! He gives us victory over sin and death through our Lord Jesus Christ.

So, my dear brothers and sisters, be strong and immovable. Always work enthusiastically for the Lord, for you know that nothing you do for the Lord is ever useless. (1 Corinthians 15.53 – 58, NLT)