Warning, I am a Christian and the views reflected here show that, but I’m also a huge fan of Open Source and Free software. While they two may seem very different, they have many important aspects in common.
Salvation is a gift from God, likewise Open Source and Free software are gifts. Both these gifts do share a common catch, you must share them. God commands Christians to go and share the good news (Mark 16:15). The GPL also commands users to share their changes with others. Sharing is of huge importance as it allows people to build communities around these gifts which encourage the recipients. Helping them to grow as individuals.
Both salvation and OSS are gifts, given freely and received freely ( 1 Corinthians 2:12). You can’t do anything to make yourself more worthy of a gift. Nothing you can do will make you more deserving of Salvation, just like no one is more deserving of access to OSS. Everyone from great developers to your grandmother, are equally worthy.
God wants to talk and share with you directly, not through some intermediary (James 2:23). Through OSS you have direct access to the code running on your machine. There aren’t any hidden black boxes, where you must simply trust what it’s doing. In a relationship with God through Jesus you also have direct access to the creator of the universe. You can ask him anything, even things you may be embarrassed to ask others about. God wants this kind of unencumbered relationship, it’s what He gave his son for.
Closed software is like a relationship with God through the law. It has a very high cost, and it isn’t very good ( Hebrews 7:18). There is a lot of guessing and relying on third parties that many time fail. Few can afford it, and even if you have it you can’t share it freely. Others must pay for their own, from their own means. If they can’t afford the “enterprise” version, they’re stuck with the shareware version with it’s ads and nag screens.
What at first may seem like a crazy analogy, Christianity and OSS, really makes a lot of sense. The same empowerment that Martin Luther found in a direct, up to date relationship with Jesus also exists with OSS and they both have changed the world.