When Christ came the first time 2000 years ago, God fulfilled his plan to make a new covenant with his people (Jeremiah 31:31). This new covenant also includes all people who will follow Christ. This means we can enjoy God forever.
The second advent of Christ is still coming. He is now living in heaven with his perfect body. And when he returns to be our king, we will be made new, just as Christ’s body was made new after his resurrection.
Only those who believe that Jesus died for our sins can look forward to this second advent. For the rest, the return of Jesus will not be good news. Pray for those who do not believe.