"Now listen, you rich people, weep and wail because of the misery that is coming on you. Your wealth has rotted, and moths have eaten your clothes. Your gold and silver are corroded. Their corrosion will testify against you and eat your flesh like fire. You have hoarded wealth in the last days. Look! The wages you failed to pay the workers who mowed your fields are crying out against you. The cries of the harvesters have reached the ears of the Lord Almighty. You have lived on earth in luxury and self-indulgence. You have fattened yourselves in the day of slaughter. You have condemned and murdered the innocent one, who was not opposing you."
https://www.biblegateway.com/passage/?search=James%205%3A1-6&version=NIV
Turning Christians into anti-capitalists is a very easy thing - they were literally taught the logic of anti-capitalism from birth.
Yet the left prefers edgelord atheism because reasons.
Christians don't actually learn anything logical. They are brainwashed from a young age and trained to be obedient.
If they actually thought about what their book said, they wouldn't vote for a dude who is constantly stealing, committing adultery, and bearing false witness.
I could say that about a lot of things - nationalism, liberalism, capitalism, colonialism, white supremacism, individualism - yet I see lots of these supposedly "logical" atheists unquestioningly embracing those.
Soooo... it's not the book then - is it?
Right, every group has irrational people and some believe awful garbage. Now go get us a demographic breakdown with odds of being Christian compared to not religious for white supremacists, etc.
You said it yourself, the teachings from their literal god lean pretty far left, but they're not a core foundational group of leftists. That's because from childhood they are brainwashed and trained to believe contradictory delusions.
If they actually thought about their religion, or had any initiative of their own, they wouldn't need to be approached by leftists, they would be the leftists approaching others.