Amazing. Everything you just said was wrong.
Morality is a concept from philosophy, religion just borrowed it.
Morality is about personal conduct. Communal rules of conduct are summarized by ethics.
Religions are usually more about ethics than about morality and they have only united those within the tribe - and cause strife with other tribes/religions.
Ethics is about placing social restrictions on the Atheist version; ego-centric style, of relative morality, for the needs of the team. Religious morality has ethical considerations built into their moral system, from day one. Both approaches can lead to the same end result. However, religious morality cuts to the chase, and does not allow the ego to over develop into relative morality, to where their future ethical foundation will become compromised, by bad impulse habits and ego bias. This is where philosophy often comes in; Epicurean justifying their narrow ego centric world view.
An analogy of the difference would be a child learning how to play a sport, on their own, in the parking lot with other pick up players; ego learning by watching and imagining they are a star. This is in contrast to the same child having a coach from day one, who can develop the solid foundation needed for their future needs in that sport; anticipated adult ethics. The former can develop bad habits, easier, falling short of the full ethics needed for an effective group building morality. The latter uses that foundation to evolve their ego in a test proven direction.
When a solider enlists and goes to boot camp, the first thing they do is break down their ego; bias of relative morality. You will forced to become lower than a worm, until the ego gives up. Once you hit rock bottom, the training starts; born again. This training has its eye on the ball. It sets the foundation for a team spirit that can work together even under dire stress. Religions tend to start basic training earlier; childhood, while atheist morality starts later. If the ego over develops; spoiled child, it can resist being born again, instead it will justify itself with a narrow philosophy.
Religions have been around for a long time and they have tried many ways; both ways. Every now and then prophets find the sweet spot allowing basic training to begin with the children. They learn ethics first, and then the ways of the ego, second; secular needs. This is like the trained team solider given freedom to improvise in the field, while always looking out for his team. Atheist morality does it backwards, as expected; ego first and ethics last, with the ego not always able to stay with the big team without supervision; law and police. Religious morality is often more self policing; first lessons of God.
As an example of the contrast, thou shall not steal is a nebulous commandment since there are hundreds if not thousands of subtle differences in terms of what constitutes stealing. The ego-centric may come up with the argument, if someone was poor and starving, and they needed to steal to eat and live, is stealing food from the farmer, stealing? The stronger ethic foundation does not try to make exceptions and loopholes for the ego. It may say, I need to ask the farmer for food and hopefully he has the same foundation as me; share and not an ego-centric greed philosophy.
I was brought up as a Catholic, which was not about fire and brimstone. It was more about the New Testament philosophy of Jesus; love and community in a beautifully appointed Church. It was about trying to be honest, fair and look out for each other. This was part of the foundation of the Love Generation. By my early teens; 13 years old, after my Confirmation; graduation from foundation building, it was time to feed the ego, while always weighing my choices based on that foundation. I never went too far, but was table to dabble in most things. All things are lawful, but not all things edify. Many thing open to learning, can still adversely impact others and harm the team.
I would like to see the Atheist develop an optimize ethical foundation for their children, before encouraging the spoiled ego who then has to find this sweet spot, after a rocky adolescence start, that can embitter them. This approach also requires a later ego building stage; teen years, but with this good foundations of basic ethics in place.