There has been an Ekklesia from the Day of Pentecost onward to today. That Ekklesia will be 'sorted' when the Rapture removes the Ekklesia. Many religious Christian wannabees will remain here on earth for the increasing hellish life of the seven years of Tribulation who were institutional Christians but not members of the Actual Church, the Ekklesia, the Body of Christ.
In the clouds meeting Jesus in the air (see 1 Thess 4:13-18) will be folks from many denominations, including catholiciism, but only members of the Body of Christ, The Body of believers, the Ekklesia establish the day of Pentecost, will be there in the clouds, then returning with Jesus to The Father's House.
Unfortunately, history refutes this Protestant point.