Predestined? Left Behind? Generational Curses?

Does God really pre-select some to believe while others can’t be saved? Why is “predestined” in Romans and Ephesians, not elsewhere? Does suicide disqualify us from heaven? Can you explain “left behind” in Matthew 24 and Luke 17? You say we should want to be left behind? Why? Do believers need to worry about generational curses?

Tags: Ephesians, generational curses, left behind, Luke 17, Matthew 24, new earth, predestination, rapture, return of Christ, Romans, suicide