“And we have seen and do testify that the Father sent the Son to be the Saviour of the world.”
King James Version (KJV)
4:14 And in consequence of this we have seen and testify that the Father sent the Son - These are the foundation and the criteria of our abiding in God and God in us, the communion of the Spirit, and the confession of the Son.
1Jo 4:14 We have seen and do testify. See Joh 15:27. This is John's personal testimony as an apostle.