They said to the woman, “It is no longer because of your words that we believe, for we have heard for ourselves, and we know that this is indeed the Savior of the world.”
for I have given them the words which thou gavest me, and they have received them and know in truth that I came from thee; and they have believed that thou didst send me.
that is, in Christ God was reconciling the world to himself, not counting their trespasses against them, and entrusting to us the message of reconciliation.
And we know that the Son of God has come and has given us understanding, to know him who is true; and we are in him who is true, in his Son Jesus Christ. This is the true God and eternal life.