It is most important for you to understand what will happen in the last days. People will laugh at you. They will live doing the evil things they want to do.
They will say, "Jesus promised to come again. Where is he? Our fathers have died, but the world continues the way it has been since it was made."
But they do not want to remember what happened long ago. By the word of God heaven was made, and the earth was made from water and with water.
Then the world was flooded and destroyed with water.
And that same word of God is keeping heaven and earth that we now have in order to be destroyed by fire. They are being kept for the Judgment Day and the destruction of all who are against God.