The event follows the type of Noah, where he and his family were taken off the earth in the Ark. Likewise, the saints of God are taken into the sky in the city of New Jerusalem. The purpose of the city is to house the saints. Thus, the saints wait in the city of New Jerusalem while the earth is burned.
It is a 2 plus 2 kind of thing. The saints go into the air, and the city of New Jerusalem comes down. Therefore, the saints going into the air went to the city of New Jerusalem. 2+2=4. It is like a man eating a meal, the cook cooks the meal, and the man eats the meal. Therefore, the cook gave the meal to the man. The saints go into the sky, and the city of New Jerusalem comes down from the sky. Therefore, the saints went to New Jerusalem. Like that.