John chapter 14, 1 - 6                  Jesus Christ speaking 

… do not let your heart be troubled … trust in God … trust also in Me … for … I go to prepare a place for you … I will come back … and … take you … to be … with Me … I AM … the Way … the Truth … and … the Life … no one comes to the Father except through Me … 

2 Thessalonians chapter 2, vs 3 

… that day … will not come … until … the falling away occurs … and … the man of lawlessness is revealed … 

 … so … the Greek word often translated  … falling away … and in some English Holy Bible translations … rebellion is actually a Greek word referenced by Strong# Greek 646 which has the literal translation of … removal … or … separation … the root of Strong# Greek 646 is Strong# Greek 868 which is the Greek word … APOSTASION … which also has the literal meaning … separation … with the connotation of … completion with separation … so … the meaning of this verse in the original Greek is that the Tribulation ( e.g. the last day(s) ) will not come until the separation of God’s children occurs … that is … the rapture of the Righteous … from other scriptures on this topic … the Tribulation appears to begin when the man of lawlessness ( the antichrist ) is revealed …