What does the Bible say about radical religion?

The gospel is a radical religion that demands everything from its followers. In Mark 3:21, we see Jesus' own family questioning His sanity, reflecting the shock and disruption the gospel brings to the status quo. Christ's stark declarations show that one must fully embrace Him or be completely outside of His fold; there is no middle ground. This radical nature is further demonstrated in various biblical narratives where those who truly follow Christ are often met with opposition and hostility due to their unwavering commitment to Gospel truth.