1 John 4:14

We [who were with Him in person] have seen and testify [as eye-witnesses] that the Father has sent the Son to be the Savior of the world.

John 4:42

and they told the woman, “We no longer believe just because of what you said; for [now] we have heard Him for ourselves and know [with confident assurance] that this One is truly the Savior of [all] the world.”

John 1:14

And the Word (Christ) became flesh, and lived among us; and we [actually] saw His glory, glory as belongs to the [One and] only begotten Son of the Father, [the Son who is truly unique, the only One of His kind, who is] full of grace and truth (absolutely free of deception).

John 3:16-17

“For God so [greatly] loved and dearly prized the world, that He [even] gave His [One and] only begotten Son, so that whoever believes and trusts in Him [as Savior] shall not perish, but have eternal life.

John 15:26-27

“But when the Helper (Comforter, Advocate, Intercessor—Counselor, Strengthener, Standby) comes, whom I will send to you from the Father, that is the Spirit of Truth who comes from the Father, He will testify and bear witness about Me.

1 John 4:10

In this is love, not that we loved God, but that He loved us and sent His Son to be the propitiation [that is, the atoning sacrifice, and the satisfying offering] for our sins [fulfilling God’s requirement for justice against sin and placating His wrath].

John 1:29

The next day he saw Jesus coming to him and said, “Look! The Lamb of God who takes away the sin of the world!

John 3:11

I assure you and most solemnly say to you, we speak only of what we [absolutely] know and testify about what we have [actually] seen [as eyewitnesses]; and [still] you [reject our evidence and] do not accept our testimony.

John 3:32

What He has [actually] seen and heard, of that He testifies; and yet no one accepts His testimony [as true].

John 3:34

For He whom God has sent speaks the words of God [proclaiming the Father’s own message]; for God gives the [gift of the] Spirit without measure [generously and boundlessly]!

John 5:36-37

But the testimony which I have is far greater than the testimony of John; for the works that the Father has given Me to finish—the very same works [that is, the miracles and proofs of My deity] that I am [now] doing—testify about Me, [by providing evidence] that the Father has sent Me.

John 5:39

You search and keep on searching and examining the Scriptures because you think that in them you have eternal life; and yet it is those [very Scriptures] that testify about Me;

John 10:36

[if that is true] then do you say of Him whom the Father sanctified and set apart for Himself and sent into the world, ‘You are blaspheming,’ because I said, ‘I am the Son of God’?

John 12:47

If anyone hears My words and does not keep them, I do not judge him; for I did not come to judge and condemn the world [that is, to initiate the final judgment of the world], but to save the world.

Acts 18:5

but when Silas and Timothy came down from Macedonia (northern Greece), Paul began devoting himself completely to [preaching] the word, and solemnly testifying to the Jews that Jesus is the Christ (the Messiah, the Anointed).

1 Peter 5:12

By Silvanus, our faithful brother (as I consider him), I have written to you briefly, to counsel and testify that this is the true grace [the undeserved favor] of God. Stand firm in it!

1 John 1:1-3

[I am writing about] what existed from the beginning, what we have heard, what we have seen with our eyes, what we have looked at and touched with our hands, concerning the Word of Life [the One who existed even before the beginning of the world, Christ]—

1 John 2:1-2

My little children (believers, dear ones), I am writing you these things so that you will not sin and violate God’s law. And if anyone sins, we have an Advocate [who will intercede for us] with the Father: Jesus Christ the righteous [the upright, the just One, who conforms to the Father’s will in every way—purpose, thought, and action].

1 John 5:9

If we accept [as we do] the testimony of men [that is, if we are willing to take the sworn statements of fallible humans as evidence], the testimony of God is greater [far more authoritative]; for this is the testimony of God, that He has testified regarding His Son.

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

We have

1 John 1:1
[I am writing about] what existed from the beginning, what we have heard, what we have seen with our eyes, what we have looked at and touched with our hands, concerning the Word of Life [the One who existed even before the beginning of the world, Christ]—
1 John 5:9
If we accept [as we do] the testimony of men [that is, if we are willing to take the sworn statements of fallible humans as evidence], the testimony of God is greater [far more authoritative]; for this is the testimony of God, that He has testified regarding His Son.
John 1:14
And the Word (Christ) became flesh, and lived among us; and we [actually] saw His glory, glory as belongs to the [One and] only begotten Son of the Father, [the Son who is truly unique, the only One of His kind, who is] full of grace and truth (absolutely free of deception).
John 3:11
I assure you and most solemnly say to you, we speak only of what we [absolutely] know and testify about what we have [actually] seen [as eyewitnesses]; and [still] you [reject our evidence and] do not accept our testimony.
John 5:39
You search and keep on searching and examining the Scriptures because you think that in them you have eternal life; and yet it is those [very Scriptures] that testify about Me;
John 15:26
“But when the Helper (Comforter, Advocate, Intercessor—Counselor, Strengthener, Standby) comes, whom I will send to you from the Father, that is the Spirit of Truth who comes from the Father, He will testify and bear witness about Me.
Acts 18:5
but when Silas and Timothy came down from Macedonia (northern Greece), Paul began devoting himself completely to [preaching] the word, and solemnly testifying to the Jews that Jesus is the Christ (the Messiah, the Anointed).
1 Peter 5:12
By Silvanus, our faithful brother (as I consider him), I have written to you briefly, to counsel and testify that this is the true grace [the undeserved favor] of God. Stand firm in it!

The father

1 John 4:10
In this is love, not that we loved God, but that He loved us and sent His Son to be the propitiation [that is, the atoning sacrifice, and the satisfying offering] for our sins [fulfilling God’s requirement for justice against sin and placating His wrath].
John 3:34
For He whom God has sent speaks the words of God [proclaiming the Father’s own message]; for God gives the [gift of the] Spirit without measure [generously and boundlessly]!
John 5:36
But the testimony which I have is far greater than the testimony of John; for the works that the Father has given Me to finish—the very same works [that is, the miracles and proofs of My deity] that I am [now] doing—testify about Me, [by providing evidence] that the Father has sent Me.
John 10:36
[if that is true] then do you say of Him whom the Father sanctified and set apart for Himself and sent into the world, ‘You are blaspheming,’ because I said, ‘I am the Son of God’?

General references

Isaiah 43:11

“I, [only] I, am the Lord,
And there is no Savior besides Me.
Luke 19:10
for the Son of Man has come to seek and to save that which was lost.”