The COG members in the splinter groups are in bondage. Only by coming to Dave's cult can they gain eternal life.
Next understand that—time and again—by God’s design (don’t miss this in the growing parallel!), God refused to allow Pharaoh to let His people go. God wanted their release to come on His timing, and to show His power. Today, God is not just going to deliver spiritual Israel from the “Egyptian” leaders under whom they serve. He wants to completely destroy the Egypt around them—to eliminate the place of bondage that now holds them. Yes, God will bring His people out of the splinters, but at the same time He will destroy the splinter organizations around them, leaving nothing remaining. The reader would do well to study the entire book of Exodus to examine the whole process at work for parallels, remembering that God in Haggai points you to this book.