And these things we write to you that your joy may be full.
1 John 1:4
Surrounding context
1:3 that which we have seen and heard we declare to you, that you also may have fellowship with us; and truly our fellowship is with the Father and with His Son Jesus Christ.
1:4 And these things we write to you that your joy may be full.
1:5 This is the message which we have heard from Him and declare to you, that God is light and in Him is no darkness at all.