Not all unbelievers have committed the sin of apostasy. Apostasy only describes unbelievers who once said they were believers. There are warnings throughout the Bible against this sin of falling away. In our passage this week Paul says that before Jesus returns there will come a time of great apostasy. A great falling away from Christ and his church. This passage warns us, but it is also a great encouragement for those with genuine faith (like the Thessalonians) that this is not us, and we can look forward to Jesus' return with great hope.
