This is the message which we have heard from him and announce to you, that God is light, and in him is no darkness at all.
The message which we have heard from him ...  Commentators have difficulty deciding on who is the antecedent of "him," since both the Father and the Son Jesus Christ were mentioned together in  1 John 1:3. To one with John's exalted view of Christ, this was no problem.  He most likely referred to the personal instruction which he and the other apostles had received from Christ himself.