Their methods reveal a cunning spirit. Apostates “quietly bring in ” corruptive ideas. Like smugglers, they operate in a clandestine manner, subtly introducing apostate views.
قَالَ بُولُسُ لِلشُّيُوخِ فِي جَمَاعَةِ أَفَسُسَ :‏ « مِنْ بَيْنِكُمْ أَنْتُمْ سَيَقُومُ رِجَالٌ يَتَكَلَّمُونَ بِأُمُورٍ مُعَوَّجَةٍ » .‏