In Revelation 14:6 it says "Then I saw another angel flying directly overhead, with an everlasting gospel to proclaim to those who dwell on earth, to every nation and tribe and language and people.
What is everlasting gospel ? well, everlasting means forever, while gospel means good news. So this time what is good news forever ? I believe this is about the kingdom of God, and His righteousness (Matthew 6:33). It is about Jesus' death on the cross in order to save us from our sins or payment for our sins and His resurrection or rising from the dead and being alive again to sit in the right hand of God to intercede for us. It is also about the Holy Spirit residing in us and helping us to live a Christian life.
What are we to do with the everlasting gospel or good news forever ?
We are to meditate on it and believe it while we are still alive on earth because if we die without believing in it then it means nothing to us. The Bible says in Hebrew 9:27 For it is appointed for man to die once, and after that the judgment.
As I try to emphasize in my previous blogs " believe in Jesus and stay or abide in Jesus". Perhaps you are thinking this could wait, but I am recommending for you to believe it and start a life with Jesus as soon as possible.
If you are not sure of the above then ask somebody, a priest, a pastor, a mature or stable or a true Christian but first ask God to guide or lead or help you.