Book 8 gives Abel a different purpose than religious people usually assume. Abel is not chosen so Abel can feel secure, superior, or protected. Abel is chosen to recover Cain and restore the stolen birthright.
That changes the emotional logic of the role. The Abel position is not a reward. It is a restorative assignment aimed at the brother who stands in the wrong place.
This is why Book 8 says the recovery of the eldest-son right happens through love, not force. If Abel crushes Cain, the birthright has not truly been restored. Cain has to be won in a way that reverses history rather than merely defeating an opponent.
The leadership implication is sharp. Any leader who thinks being Abel means gathering loyal people around the self has misunderstood the role completely.