Not every passage in the Bible is hiding a secret message.
Quick test: If the words of the Bible lead to people being excluded, it’s best to take a really good look at the meaning behind the verses with someone who knows what was happening at the time. If the words are inclusive, then we are pretty close to reading Jesus’ teaching straight-up. God is always, always the God of everyone, believers or not.
Who were the Galatians? The were a group of Greek speakers on the west end of modern Turkey, in today’s city of Ankara. They were believed to have emigrated from Gaul (modern France) around the 3rd century BCE. Paul started the church in their community within a decade or two of Jesus’ death and resurrection.