In the second chapter of John's first letter to the church, John refutes the subtle deception of the Gnostic heresy, which claimed that believers needed a special anointing, and a "deeper knowledge" than what they already had. Today, the church must continue to stand on guard against the lies of Satan, relying on the Holy Spirit to guide us in discerning the Truth. From this passage, we also see an affirmation of the assurance of our salvation.