Indeed the second coming brings Judgement. God promises to avenge the blood of the saints He spoke to at their graves, because their blood cried out to Him from the grave. Jesus Himself, comes with a double edge sword to judge those who attacked His bride, His body, His elect. Blood will be as high as a horses sadle and as far as the eye can see. The Beast and False prophet will be cast into the lake of fire, and the Dragon, Satan will be thrown down into the abyss for a thousand years. That's judgemet and the end of this age.
Suddenly, we enter the mellennial age, at the end of the mellennia, Satan is released, He will gather the nations against God, and God destroy's them, not with a battle, but straight out of heaven, first with an earthquake, and then with brimstone and fire. Suddenly, God vaporises this earth and this heaven, and a new heaven and new earth appear, and the New Jerusalem.