Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord. 1 Thessalonians 4:17
And he said to them, “Go into all the world and proclaim the gospel to the whole creation. Mark 16:15
Will Christians be "left behind" if they don't believe in the Rapture?
Should we focus on the Rapture or is there something more important?