I apologize for being a little late this week. Yesterday and today have been rather hectic, and I don’t like to rush this. So let us begin chapter 4:
Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world. 2 By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God, 3 and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you heard was coming and now is in the world already.
Remember that this is a letter and that the chapter divisions came later. John has not fully changed thoughts here, but has flowed from speaking of the Holy Spirit to speaking about false spirits. This coincides with his message in the last section as well which is based on true and false Christians.