How does the number of Old Testament and tribulation saints compare to the number in the Body of Christ?

Les explains that the Old Testament and tribulation saints will be relatively few in number compared to the number in the Body of Christ. He cautions against assuming that few people have been saved during the church age, because all the little infants who have died, not just in America but worldwide, are going to be in the Body of Christ. The abortions are also going into the Body of Christ. Therefore the Body of Christ will be humongous. Les adds that believers will not be confined to the planet when they rule and reign; they will rule and reign in the heavenlies, and the whole sphere of outer space will be their domain. No one will feel crowded or be like mice in an experiment; they will have all kinds of room and serve Him with joy unspeakable. The change begins at I Corinthians 15:51-52, where not all will die but all must be changed, receiving a new body in a moment.