What does the Bible say about dangers in the church?

The Bible addresses the dangers that arise within the church, particularly through the Apostle Paul in 1 Timothy 4:1-5, where he discusses the reality of apostasy and the influence of deceitful spirits and false teachings. These warnings are crucial as they highlight the vulnerability of believers to be led astray by those who distort the truth of the gospel. Furthermore, the apostle Peter and John reiterate similar warnings regarding false prophets and the reality of many arising from within the church itself, indicating that the church must always be vigilant against internal and external threats.