1 John 1:3

what we have seen and heard, we announce to you also, in order that you also may have fellowship with us, and indeed our fellowship [is] with the Father and with his Son Jesus Christ.

1 Corinthians 1:9

God [is] faithful, by whom you were called to fellowship with his Son Jesus Christ our Lord.

1 John 1:1

What was from the beginning, what we have heard, what we have seen with our eyes, what we have looked at and our hands have touched, concerning the word of life--

Philippians 2:1

Therefore, if [there is] any encouragement in Christ, if any consolation of love, if any fellowship of the Spirit, if any affection and compassion,

John 17:3

Now this is eternal life: that they know you, the only true God, and Jesus Christ, whom you have sent.

John 17:21

that they all may be one, just as you, Father, [are] in me and I [am] in you, that they also may be in us, in order that the world may believe that you sent me.

Acts 4:20

For we are not able to refrain from speaking about [the things] that we have seen and heard."

Philippians 3:10

so that I may know him and the power of his resurrection and the fellowship of his sufferings, being conformed to his death,

1 John 1:7

But if we walk in the light as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.

Psalm 2:7

I will tell the decree; Yahweh said to me: "You are my son; today I have begotten you.

Psalm 22:22

I will tell your name to my brothers; inside [the] assembly I will praise you.

Isaiah 66:19

And I will set a sign among them, and I will send survivors from them to the nations: Tarshish, Pul, and Lud, who draw [the] bow; Tubal and Javan, the faraway coastlands that have not heard [of] my fame, and have not seen my glory. And they shall declare my glory among the nations,

John 14:20-23

On that day you will know that I [am] in my Father, and you [are] in me, and I [am] in you.

John 17:11

And I am no longer in the world, and they are in the world, and I am coming to you. Holy Father, keep them in your name, which you have given to me, so that they may be one, just as we [are].

John 17:25

Righteous Father, although the world does not know you, yet I have known you, and these [men] have come to know that you sent me.

Acts 2:42

And they were devoting themselves to the teaching of the apostles and to fellowship, to the breaking of bread and to prayers.

Acts 13:32

And we proclaim the good news to you: that the promise that was made to the fathers,

Acts 13:41

'Look, you scoffers, and be astonished and perish! For I am doing a work in your days, a work that you would never believe [even] if someone were to tell [it] to you.'"

Acts 20:27

for I did not shrink from proclaiming to you the whole purpose of God.

Romans 15:27

For they were pleased [to do so], and they are obligated to them. For if the Gentiles have shared in their spiritual [things], they ought also to serve them in material [things].

1 Corinthians 1:30

But from him you are in Christ Jesus, who became wisdom to us from God, and righteousness and sanctification and redemption,

1 Corinthians 15:1

Now I make known to you, brothers, the gospel which I proclaimed to you, which you have also received, in which you also stand,

Ephesians 3:6

[that] the Gentiles are fellow heirs, and fellow members of the body, and fellow sharers of the promise in Christ Jesus through the gospel,

Philippians 1:7

just as it is right for me to think this about all of you, because I have you in my heart, [since] both in my imprisonment and in the defense and confirmation of the gospel all of you are sharers of grace with me.

Colossians 1:13

who has rescued us from the domain of darkness and transferred [us] to the kingdom of the Son {he loves},

1 Thessalonians 1:10

and to await his Son from heaven, whom he raised from the dead, Jesus, the one who delivers us from the coming wrath.

1 Timothy 6:2

And those who have believing masters must not look down on [them] because they are brothers, but rather they must serve, because those who benefit by their service are believers and dearly loved.

Hebrews 2:12

saying, "I will proclaim your name to my brothers; in the midst of the assembly I will sing in praise of you."

Hebrews 3:1

Therefore, holy brothers, sharers in a heavenly calling, consider Jesus, the apostle and high priest of our confession,

Hebrews 3:14

For we have become partners of Christ, if indeed we hold fast the beginning of [our] commitment steadfast until the end,

1 Peter 5:1

Therefore [I, your] fellow elder and a witness of the sufferings of Christ, [and] also a sharer of the glory that is going to be revealed, exhort the elders among you:

1 John 1:5

And this is the message which we have heard from him and announce to you, that God is light and there [is] no darkness in him at all.

1 John 2:23-24

Everyone who denies the Son does not have the Father [either]; the one who confesses the Son has the Father also.

1 John 5:10-11

(The one who believes in the Son of God has the testimony in himself. The one who does not believe God has made him a liar, because he has not believed in the testimony that God has testified concerning his Son.)

Treasury of Scripture Knowledge

Summary

That which we have seen and heard declare we unto you, that ye also may have fellowship with us: and truly our fellowship is with the Father, and with his Son Jesus Christ.

Bible References

Declare

1 John 1:5
And this is the message which we have heard from him and announce to you, that God is light and there [is] no darkness in him at all.
Psalm 2:7
I will tell the decree; Yahweh said to me: "You are my son; today I have begotten you.
Psalm 22:22
I will tell your name to my brothers; inside [the] assembly I will praise you.
Isaiah 66:19
And I will set a sign among them, and I will send survivors from them to the nations: Tarshish, Pul, and Lud, who draw [the] bow; Tubal and Javan, the faraway coastlands that have not heard [of] my fame, and have not seen my glory. And they shall declare my glory among the nations,
John 17:25
Righteous Father, although the world does not know you, yet I have known you, and these [men] have come to know that you sent me.
Acts 13:32
And we proclaim the good news to you: that the promise that was made to the fathers,
Acts 20:27
for I did not shrink from proclaiming to you the whole purpose of God.
1 Corinthians 15:1
Now I make known to you, brothers, the gospel which I proclaimed to you, which you have also received, in which you also stand,
Hebrews 2:12
saying, "I will proclaim your name to my brothers; in the midst of the assembly I will sing in praise of you."

Our fellowship

1 John 1:7
But if we walk in the light as he is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.
1 John 2:23
Everyone who denies the Son does not have the Father [either]; the one who confesses the Son has the Father also.
John 14:20
On that day you will know that I [am] in my Father, and you [are] in me, and I [am] in you.
John 17:3
Now this is eternal life: that they know you, the only true God, and Jesus Christ, whom you have sent.
1 Corinthians 1:9
God [is] faithful, by whom you were called to fellowship with his Son Jesus Christ our Lord.
Philippians 2:1
Therefore, if [there is] any encouragement in Christ, if any consolation of love, if any fellowship of the Spirit, if any affection and compassion,
Philippians 3:10
so that I may know him and the power of his resurrection and the fellowship of his sufferings, being conformed to his death,
Hebrews 3:14
For we have become partners of Christ, if indeed we hold fast the beginning of [our] commitment steadfast until the end,

With his

1 John 5:10
(The one who believes in the Son of God has the testimony in himself. The one who does not believe God has made him a liar, because he has not believed in the testimony that God has testified concerning his Son.)
Colossians 1:13
who has rescued us from the domain of darkness and transferred [us] to the kingdom of the Son {he loves},
1 Thessalonians 1:10
and to await his Son from heaven, whom he raised from the dead, Jesus, the one who delivers us from the coming wrath.

General references

Numbers 10:32
Moreover, if you go with us, the good that Yahweh will do to us we will do to you."
Mark 4:22
For nothing is secret except so that it may be revealed, nor has become hidden except so that it will come to light.
Luke 24:48
You are witnesses of these [things].
John 20:30
Now Jesus also performed many other signs in the presence of the disciples which are not recorded in this book,
Philippians 1:5
because of your participation in the gospel from the first day until now,