Just call something a sin and see how long it takes someone to quote Jesus in Matthew 7:1: "Judge not!" But Jesus didn't say, “Judge not,” followed by a period or an exclamation point. He said, “Do not judge,” followed by a clarification of what type of judgments to make, when to make them, and how to make them. In 1 Corinthians 5, Paul adds clarity when he tells us to “judge those inside the church,” not those on the outside.