1 John 4:14

And we [apostles] have seen and are [reliable] witnesses that the Father has sent the Son to be the Savior of the world [See 1:2; 2:2].

John 4:42

and they said to the woman, "Now we believe, not just because of what you said, but because we have heard [it] for ourselves and know that this is truly the Savior of the world."

John 1:14

[Eventually] this Word became a human being and lived among us [Note: The word "lived" here refers to pitching a temporary tent]. (And we saw His splendor; such splendor as belongs to the Father's only Son), full of God's favor and truth.

John 3:16-17

For God loved the world [of sinners] so much that He gave His one and only Son, so that every person who believes in Him would not [have to] be destroyed, but have never ending life.

John 15:26-27

"But the Helper will come, that is, the Holy Spirit of truth [i.e., who reveals truth]. He comes from the Father and I will send Him to you from the Father. [When He comes] He will give testimony about me.

1 John 4:10

Here is [the essence of] love: [It is] not that we loved God [first], but that He loved us [See Rom. 5:6-8] and sent His Son to be a "covering over" [i.e., atonement, 2:2] for our sins.

John 1:29

On the next day John [the Immerser] saw Jesus approaching him and said, "Look, [there is] the Lamb of God; He [will] take away the sin of the people of the world.

John 3:11

Truly, truly, I tell you, we [i.e., Jesus and His disciples] speak about what we know, and testify about what we have seen, but you do not accept our testimony.

John 3:32

He testifies concerning what He has seen and heard, but no one accepts His testimony.

John 3:34

For the One whom God has sent [i.e., Jesus] speaks the words of God, for He [i.e., God] does not give the Holy Spirit in a limited quantity [i.e., to Jesus. See next verse].

John 5:36-37

But my testimony is greater than John's. For the deeds the Father has given me to complete, the very deeds I do, testify about me, that the Father has sent me.

John 5:39

You search through the Scriptures [i.e., the Old Testament], because you think that you will [learn how to] have never ending life by [reading] them. And these Scriptures are what testify concerning me.

John 10:36

how can you people say to Him, whom the Father set apart and sent into the world, 'You are speaking abusively [i.e., about God],' because I said, 'I am the Son of God'? He is the One whom the Father set apart [i.e., for His service] and sent into the world.

John 12:47

And if any person hears my message and does not obey it, I will not judge him [now], for I did not come into the world to judge it, but to save it.

Acts 18:5

But when Silas and Timothy arrived from Macedonia [i.e., from the town of Berea], Paul began devoting his full time to declaring the message to Jews that Jesus was the Christ.

1 Peter 5:12

This brief message is being inscribed [or delivered] by Silvanus, whom I consider to be a faithful brother. [In it] I am exhorting you and giving testimony that it is a message about God's genuine unearned favor upon you. So, continue to follow [and obey] what it says.

1 John 1:1-3

We [apostles] proclaim to you [the truth about Jesus], who existed from the beginning [of time]. We have heard [Him] and seen [Him] with our [own] eyes. We looked at Him, and [even] touched Him with our hands. [See John 20:20]. [So, we proclaim that] He is the word of life [i.e., the life-giving Word]!

1 John 2:1-2

My little children [i.e., dear ones], I am writing this to you so that you will not sin anymore. But if anyone does sin, we have Someone to go to the Father on our behalf; it is Jesus Christ, the [only] righteous One.

1 John 5:9

If we [are willing to] accept the testimony of people about matters, [surely we ought to accept that] the testimony of God is more reliable; because the testimony of God is that He has presented [confirming] testimony concerning [the identity and mission of] 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
We [apostles] proclaim to you [the truth about Jesus], who existed from the beginning [of time]. We have heard [Him] and seen [Him] with our [own] eyes. We looked at Him, and [even] touched Him with our hands. [See John 20:20]. [So, we proclaim that] He is the word of life [i.e., the life-giving Word]!
1 John 5:9
If we [are willing to] accept the testimony of people about matters, [surely we ought to accept that] the testimony of God is more reliable; because the testimony of God is that He has presented [confirming] testimony concerning [the identity and mission of] His Son.
John 1:14
[Eventually] this Word became a human being and lived among us [Note: The word "lived" here refers to pitching a temporary tent]. (And we saw His splendor; such splendor as belongs to the Father's only Son), full of God's favor and truth.
John 3:11
Truly, truly, I tell you, we [i.e., Jesus and His disciples] speak about what we know, and testify about what we have seen, but you do not accept our testimony.
John 5:39
You search through the Scriptures [i.e., the Old Testament], because you think that you will [learn how to] have never ending life by [reading] them. And these Scriptures are what testify concerning me.
John 15:26
"But the Helper will come, that is, the Holy Spirit of truth [i.e., who reveals truth]. He comes from the Father and I will send Him to you from the Father. [When He comes] He will give testimony about me.
Acts 18:5
But when Silas and Timothy arrived from Macedonia [i.e., from the town of Berea], Paul began devoting his full time to declaring the message to Jews that Jesus was the Christ.
1 Peter 5:12
This brief message is being inscribed [or delivered] by Silvanus, whom I consider to be a faithful brother. [In it] I am exhorting you and giving testimony that it is a message about God's genuine unearned favor upon you. So, continue to follow [and obey] what it says.

The father

1 John 4:10
Here is [the essence of] love: [It is] not that we loved God [first], but that He loved us [See Rom. 5:6-8] and sent His Son to be a "covering over" [i.e., atonement, 2:2] for our sins.
John 3:34
For the One whom God has sent [i.e., Jesus] speaks the words of God, for He [i.e., God] does not give the Holy Spirit in a limited quantity [i.e., to Jesus. See next verse].
John 5:36
But my testimony is greater than John's. For the deeds the Father has given me to complete, the very deeds I do, testify about me, that the Father has sent me.
John 10:36
how can you people say to Him, whom the Father set apart and sent into the world, 'You are speaking abusively [i.e., about God],' because I said, 'I am the Son of God'? He is the One whom the Father set apart [i.e., for His service] and sent into the world.

General references

Luke 19:10
For the Son of man came to search for and save those who were lost."