You seem to be quite confused.
According to Scripture the Resurrection/Rapture is ONE EVENT in two phases but within the twinkling of an eye (in nanoseconds). The saints who had died will be resurrected and receive glorified bodies (having been perfected), while the saints who are alive at that time will be transformed, perfected, glorified. All of this is supernatural and wrought be the power of God and Christ. It is also the culmination of salvation which is in three phases: (1) justification (2) sanctification, and (3) glorification.
At the Resurrection/Rapture Christ does NOT descend to earth but comes "in the air", and then returns with all the saints to Heaven, in anticipation of the Marriage of the Lamb.
At the same time, we need to see that the Bible speaks of "the First Resurrection" and (by implication) it means that there is a Second Resurrection.
The First Resurrection is for the righteous but it is actually in three phases (just like a Hebrew harvest): (1) Christ the First Fruits, (2) all the saints at the Resurrection/Rapture (the main harvest), and (3) the Tribulation saints (as the gleanings).
The Second (and last) Resurrection is for the unrighteous or unsaved dead. This happens at the Great White Throne Judgment.