Greene, an Air Force veteran from San Antonio who has a history of activism,threatened in February to file a lawsuit against Henderson County, Texas, if they did not remove a Nativity scene in front of the courthouse

But he was forced to drop the lawsuit after doctors told him that he had developed eye cataracts and was in danger of losing his vision, according to the Houston Chronicle. Shortly thereafter, Greene's failing vision forced him to quit his job as a taxi driver and he was left with the challenge of supporting himself and his wife of 33 years.

That's when Jessica Crye, a Christian woman who read about Greene's troubles in the paper, went to members of her church and asked if they would be willing to donate money to help Greene. They ended up raising $400 in donations for Greene, which left him "flabbergasted that Christians would help atheists,

It's that compassion that Greene says compelled him to start rethinking his religious beliefs.