Remember the context is the Gnostics. The word gnosis means knowledge. The gnostics felt that they were enlightened. Because of their “knowledge,” their enlightenment, they had disdain for common folk.
7 marks of being a Christian
Mark 1: True Christians confess and turn from sin (1 John 1:10)
Mark 2: True Christians follow Jesus in His word (1 John 2:3-6)
Mark 3: True Christians Love Each Other (1 John 2:9-11)