Tribulation Question?

I wonder that myself...no where in the Bible does the word rapture appear. I believe myself, that when Jesus comes in the clouds, that's it-there will be no more earth all things will be destroyed. If we, actually think about it-this will be Jesus' third coming. The first, when He came down from heaven to die on the cross for our sins, the second, on the day of Pentecost when the Holy Ghost came, (spirit of Jesus)(which the Holy Ghost still is given!) and third when the final trumpet sounds and the dead in Christ will rise first to meet Him in the air, and we that remain will be quickly changed and will rise to meet them in the air.