If you embrace a system of theology that espouses pretribulationism (the idea that we're raptured before the tribulation) you are forced to believe that there are two raptures, to resurrections, two second comings, two people of God, two divine destinies, two new covenants often, two weddings, two bridegrooms. 

The scriptures teach there is one Bridegroom, one marriage banquet, one King, one new covenant, one people, one ultimate destiny, one coming, one resurrection, one rapture. - Joel Richardson