Jesus will return to earth to defeat Satan, end evil, gather His followers and establish the kingdom of
God.
But when the Son of Man comes in his glory, and all the angels with him, then he will sit upon his glorious
throne.
Matthew 25:31 (NLT)
Jesus will return from heaven in an event referred to as the Second Coming. The believers will be rewarded and the unbelievers will be condemned. He will finally defeat Satan and eliminate evil.
There is no judgment against anyone who believes in him. But anyone who does not believe in him has already been judged for not believing in God’s one and only Son.
John 3:18 (NLT)
And then at last, the sign that the Son of Man is coming will appear in the heavens, and there will be deep mourning among all the peoples of the earth. And they will see the Son of Man coming on the clouds of heaven with power and great glory. 31 And he will send out his angels with the mighty blast of a trumpet, and they will gather his chosen ones from all over the world - from the farthest ends of the earth and heaven.