Charles Spurgeon Commentary 1 John 4:14

"And we have beheld and bear witness that the Father hath sent the Son [to be] the Saviour of the world." — 1 John 4:14 (ASV)

We have seen and do testify that the Father sent the Son to be the Saviour of the world.

John saw him live, and saw him die, and saw him when he had risen from the dead, and saw him as he ascended. So he speaks to the matter of eyesight, and testifies that, though we have not seen God, we have, in the person of the representative apostles, seen the Son of God who lived and laboured and died for us.

And we have seen.

Yes, there is something that we have seen. John writes for himself and his fellow apostles, and he says, No man hath seen God at any time, but –