New Defender's Study Bible Notes
3:4 Traitors. This word was used of Judas (Luke 6:16), who betrayed Christ, suggesting that the latter-day church harbors many Christ-betrayers.
3:4 highminded. The word means “puffed up.”
3:4 lovers of God. One need only compare the number of pleasure-seekers on the Lord’s Day to the number of people in church!