Christianity (specifically the protestant branch) paired with the capitalist free market has been the method to lift more people out of poverty than any other in history.

The issue is that to change society enough to deeply ingrain the cultural foundations of protestant Christians takes more than three generations.

Having given the subject deep thought, I have some ideas as to why.

Honesty: Merchants who deal honestly with their customers benefit both parties. The customers form a relationship and (probably) come back. The customers get an honest deal. The effect on the greater economy is vast. Something like 40% increase in overall GDP. This is on top of the social benefits of living in a society where people are not lying cunts. Honesty is closely related to the value of Justice. An honest man sees the value in a just society. An honest man does not fear judgement.

Penance and Forgiveness: With a path for rehabilitation and reacceptance to polite society, there is a way to take problem actors and allow them to participate productively. Obviously this doesn't work in every case, but in general, it is more scalable across a nation. This replaces banishment, which worked just fine for a little desert tribe or a city state. Not so much for a country that spans a continent or an empire that rules the waves. The Christian method puts the responsibility directly on the individual. You screwed up? Fine. YOU do the work to make amends. We will watch. Forgiveness isn't the same as forgetting and it has limits. Even Jesus picked up a lash and scourged those fucking moneylenders.

Work Ethic: Protestants are famous for their cast iron work ethic. They work hard and they face their community every week in church. While it isn't specifically a Christian value, it is very much a cultural value.

The free market allows immediate feedback for your actions. People who add the most value to society earn the most money. It is vital that personal earnings be tempered by social values that maximize the individuals value to greater society rather than just the economy. A significant portion of the bible is spent instructing that rich people should be held to the same standards or even higher standards than everyone else. Your obligations to god and your fellow man do not change just because you are wealthy or even very rich.

In Russia the socialist movement first tore down the church and then tore down the family. The institutions of the state were subverted and used to keep the citizens obedient and afraid.

I was raised in the protestant tradition. I didn't think much of Christianity and I certainly didn't see the point of church. Now I am later in my life I have distinctly changed my mind. Frankly it doesn't matter if God is real or not. If we act like God exists, the world is a better place. History shows this pretty clearly. The most successful cultures of all time have been from the Christian tradition, with the strongest of those being Protestant and Lutheran.