1 John 1:3

that which we have seen and heard we also proclaim to you, in order that you may have fellowship with us. And our fellowship is indeed with the Father, and with his Son Jesus Christ.

1 Corinthians 1:9

God is faithful, through whom you have been called unto the fellowship of His Son our Lord Jesus Christ.

1 John 1:1

That which was from the beginning, which we have heard, which we have seen with our eyes, which we have beheld, and our hands have handled, concerning the Word of the life;

Philippians 2:1

If then there is any consolation in Christ, if there is any comfort of divine love, if any fellowship of the Spirit, if any affection and mercies,

John 17:3

But this is eternal life, that they know thee the only true God, and Jesus Christ whom thou didst send.

John 17:21

that they may all be one, as thou, Father, art in me, and I in thee, that they also may be in us; that the world may believe that thou didst send me.

Acts 4:20

for we are not able not to speak those things which we have seen and heard.

2 Corinthians 13:14

The grace of the Lord Jesus Christ, and the love of God, and the fellowship of the Holy Spirit, be with you all.

Philippians 3:10

to know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto 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.

John 14:20-23

In that day you shall know that I am in the Father, you in me, and I in you.

John 17:11

And I am no longer in the world, and they are in the world, and I come to thee. Holy Father, keep them through my name whom thou hast given unto me, in order that they may be one, as we are.

John 17:25

Righteous Father, indeed the world does not know thee, but I know thee, and they know that thou didst send me;

Acts 2:42

and they were persevering in the teaching of the apostles and fellowship, in the breaking of bread, and in prayers.

Acts 13:32

And we preach unto you the promise, which was made to the fathers,

Acts 13:41

Behold, ye despisers, and wonder, and vanish away: because I work a work in your days, a work which you may not believe, though one may proclaim it to you.

Acts 20:27

for I did not shrink to declare unto you all the counsel of God.

Romans 15:27

For they were pleased to do so; and they are their debtors: for if the Gentiles participated in spiritual things, they owe it to them also to minister unto them in carnal things.

1 Corinthians 1:30

But of him are ye in Christ Jesus, who of God was made unto us wisdom, and righteousness and sanctification, and redemption:

1 Corinthians 15:1

But I make known to you, brethren, the gospel which I preached unto you, which you indeed received, in which you also stand,

Philippians 1:7

as it is righteous for me to think in behalf of you all, because I have you in my heart, both in my bonds and in the defence and confirmation of the gospel, that you are all my fellow-partakers of the grace.

Colossians 1:13

who delivered us from the power of darkness, and transplanted us into the kingdom of the Son of his love;

1 Thessalonians 1:10

and to await his Son out of the heavens, whom he raised from the dead, Jesus the one delivering us from the wrath to come.

1 Timothy 6:2

But let those that have faithful masters not despise them, because they are brethren; but rather let them serve them, because they are the faithful and beloved who are partaking of the benefaction. Command these things and exhort them.

Hebrews 2:12

saying, I will proclaim thy name to thy brethren, in the midst of the church will sing praises to thee.

Hebrews 3:1

Therefore, holy brethren, partakers of the heavenly calling, consider Jesus, the Apostle and High Priest of our profession;

Hebrews 3:14

for we have been made partakers of Christ, if indeed we may hold fast the beginning of confidence firm unto the end.

1 Peter 5:1

Therefore I, being a fellow-elder and a witness of the sufferings of Christ, also a communicant of the glory which is about to be revealed, exhort the elders who are among you:

1 John 1:5

And the same message which we have heard from him, we also proclaim to you, that God is light and in him there is no darkness.

1 John 2:23-24

No one denying the Son has the Father: the one confessing the Son has also the Father.

1 John 5:10-11

The one believing on the Son of God has the witness in himself: the one not believing God has made him a liar; because he has not believed in the testimony which 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 the same message which we have heard from him, we also proclaim to you, that God is light and in him there is no darkness.
John 17:25
Righteous Father, indeed the world does not know thee, but I know thee, and they know that thou didst send me;
Acts 13:32
And we preach unto you the promise, which was made to the fathers,
Acts 20:27
for I did not shrink to declare unto you all the counsel of God.
1 Corinthians 15:1
But I make known to you, brethren, the gospel which I preached unto you, which you indeed received, in which you also stand,
Hebrews 2:12
saying, I will proclaim thy name to thy brethren, in the midst of the church will sing praises to thee.

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
No one denying the Son has the Father: the one confessing the Son has also the Father.
John 14:20
In that day you shall know that I am in the Father, you in me, and I in you.
John 17:3
But this is eternal life, that they know thee the only true God, and Jesus Christ whom thou didst send.
1 Corinthians 1:9
God is faithful, through whom you have been called unto the fellowship of His Son our Lord Jesus Christ.
2 Corinthians 13:14
The grace of the Lord Jesus Christ, and the love of God, and the fellowship of the Holy Spirit, be with you all.
Philippians 2:1
If then there is any consolation in Christ, if there is any comfort of divine love, if any fellowship of the Spirit, if any affection and mercies,
Philippians 3:10
to know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death;
Hebrews 3:14
for we have been made partakers of Christ, if indeed we may hold fast the beginning of confidence firm unto the end.

With his

1 John 5:10
The one believing on the Son of God has the witness in himself: the one not believing God has made him a liar; because he has not believed in the testimony which God has testified concerning his Son.
Colossians 1:13
who delivered us from the power of darkness, and transplanted us into the kingdom of the Son of his love;
1 Thessalonians 1:10
and to await his Son out of the heavens, whom he raised from the dead, Jesus the one delivering us from the wrath to come.

General references

Mark 4:22
For there is nothing hidden which may not be made manifest; neither is there any thing concealed, but that it may come into the light.
Luke 24:48
You are witnesses of these things.
John 20:30
Indeed then Jesus also did many other miracles in the presence of His disciples, which have not been written in this book;
Philippians 1:5
for your fellowship in the gospel from the first clay until now;