The End
Right now is the church age. Also called the age of the Gentiles. (Gentiles is everybody except the Jews).
Up until 2000 years ago, God had a special people. His people. The Jews.
Actually he still does, but right now his relationship with them is kind of suspended. (Because they rejected his son Jesus).
But because of that God extended his offer of salvation to the Gentiles (and any Jews who would accept it).
One day, hopefully soon, the age of the Gentiles will come to an end. When it does, God will take his church away in an instant. We will be gone. We will meet Jesus in the air and go with him to Heaven.
But then a dark and terrible time of judgement will come upon the Earth.
God will restore his covenant with Israel, but for 7 years he will pour out his anger on the Earth.
At the end of that time, Jesus himself will return to Jerusalem to deliver the Jews from their enemies. He will reign over the entire planet from Jerusalem for 1000 years. During that time Satan will be bound in prison, but at the end of the millennium of peace, Satan will be released for one last battle.
Jesus will of course be victorious and Satan and his demons will be thrown into the lake of fire.
All the dead will be resurrected to judgement. Those who have believed in Jesus to eternal life, and those who have not to eternal "death".
Finally, God will create a new Heaven and a new Earth. He will make a new Jerusalem (with streets of gold and huge pearls for gates). And Jesus and those who believe in him will live there together forever.
It's very tempting to get into speculation about details and times.
But the important thing for us, is that God has it all worked out. He has everything covered and things will in fact turn out exactly 100% as he has planned.
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