1 John 1:3

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

1 Corinthians 1:9

God is faithful, by whom ye were called into the fellowship of his Son Jesus Christ our Lord.

1 John 1:1

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

Philippians 2:1

Therefore if there is any consolation in Christ, if any comfort of charity, if any fellowship of the Spirit, if any bowels and mercies,

John 17:3

And this is life eternal, that they might know thee the only true God and Jesus Christ, whom thou hast sent.

John 17:21

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

Acts 4:20

For we cannot but speak the things which we have seen and heard.

2 Corinthians 13:14

The grace of the Lord Jesus Christ and the charity of God and the communion of the Holy Spirit be with you all. Amen.

Philippians 3:10

That I may 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 communion with him in the midst of us, and the blood of Jesus Christ, his Son cleanses us from all sin.

Psalm 2:7

I will declare the decree; the LORD hath said unto me, Thou art my Son; this day I have begotten thee.

Psalm 22:22

I will declare thy name unto my brethren; in the midst of the congregation I will praise thee.

Isaiah 66:19

And I will set a sign among them, and I will send those that escape of them unto the Gentiles, to Tarshish, Pul, and Lud, that draw the bow, to Tubal, and Javan, to the isles afar off, that have never heard my name, nor seen my glory; and they shall declare my glory among the Gentiles.

John 14:20-23

At that day ye shall know that I am in my Father, and ye in me, and I in you.

John 17:11

And now I am no longer in the world, but these are in the world, and I come to thee. Holy Father, those whom thou hast given me, keep them in thy name, that they may be one, as we are.

John 17:25

O righteous Father, the world has not known thee; but I have known thee, and these have known that thou hast sent me.

Acts 2:42

And they continued steadfastly in the apostles' doctrine and fellowship and in breaking of bread and in prayers.

Acts 13:32

And we declare unto you the gospel of the promise which was made unto the fathers,

Acts 13:41

Behold, ye despisers, and wonder and perish, for I do a work in your days, a work which ye would in no wise believe, if one should declare it unto you.

Acts 20:27

For I have not refrained from declaring unto you the full counsel of God.

Romans 15:27

It has pleased them verily, and they are their debtors. For if the Gentiles have been made partakers of their spiritual things, they should also minister unto them in carnal things.

1 Corinthians 1:30

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

1 Corinthians 15:1

Moreover, brothers, I declare unto you the gospel which I preached unto you, which also ye have received and in which ye stand;

Ephesians 3:6

that the Gentiles should be fellow heirs and of the same body and partakers of his promise in the Christ by the gospel,

Philippians 1:7

Even as it is right for me to think this of you all because I have you in my heart; inasmuch as both in my bonds and in the defense and confirmation of the gospel, ye all are joint partakers of my grace.

Colossians 1:13

who has delivered us from the power of darkness, and has translated us into the kingdom of his dear Son,

1 Thessalonians 1:10

and to wait for his Son from the heavens, whom he raised from the dead, even Jesus, who delivered us from the wrath to come.

1 Timothy 6:2

And those that have faithful masters, let them not despise them, because they are brethren, but rather serve them better, because they are faithful and beloved, partakers of the benefit. Teach and exhort this.

Hebrews 2:12

saying, I will declare thy name unto my brethren; in the midst of the congregation I will praise thee.

Hebrews 3:1

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

Hebrews 3:14

For we are made partakers of Christ, if we hold the beginning of our confidence steadfast unto the end;

1 Peter 5:1

The elders who are among you I exhort (I am also an elder with them and a witness of the afflictions of the Christ, and also a participant of the glory that shall be revealed).

1 John 1:5

This then is the promise which we have heard of him and declare unto you, That God is light, and in him is no darkness at all.

1 John 2:23-24

Whosoever denies the Son, the same does not have the Father. Whosoever confesses the Son, has the Father also.

1 John 5:10-11

He that believes in the Son of God has the witness of God in himself; he that does not believe God has made God a liar; because he does not believe the witness that God has testified of 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
This then is the promise which we have heard of him and declare unto you, That God is light, and in him is no darkness at all.
Psalm 2:7
I will declare the decree; the LORD hath said unto me, Thou art my Son; this day I have begotten thee.
Psalm 22:22
I will declare thy name unto my brethren; in the midst of the congregation I will praise thee.
Isaiah 66:19
And I will set a sign among them, and I will send those that escape of them unto the Gentiles, to Tarshish, Pul, and Lud, that draw the bow, to Tubal, and Javan, to the isles afar off, that have never heard my name, nor seen my glory; and they shall declare my glory among the Gentiles.
John 17:25
O righteous Father, the world has not known thee; but I have known thee, and these have known that thou hast sent me.
Acts 13:32
And we declare unto you the gospel of the promise which was made unto the fathers,
Acts 20:27
For I have not refrained from declaring unto you the full counsel of God.
1 Corinthians 15:1
Moreover, brothers, I declare unto you the gospel which I preached unto you, which also ye have received and in which ye stand;
Hebrews 2:12
saying, I will declare thy name unto my brethren; in the midst of the congregation I will praise thee.

Our fellowship

1 John 1:7
But if we walk in the light, as he is in the light, we have communion with him in the midst of us, and the blood of Jesus Christ, his Son cleanses us from all sin.
1 John 2:23
Whosoever denies the Son, the same does not have the Father. Whosoever confesses the Son, has the Father also.
John 14:20
At that day ye shall know that I am in my Father, and ye in me, and I in you.
John 17:3
And this is life eternal, that they might know thee the only true God and Jesus Christ, whom thou hast sent.
1 Corinthians 1:9
God is faithful, by whom ye were called into the fellowship of his Son Jesus Christ our Lord.
2 Corinthians 13:14
The grace of the Lord Jesus Christ and the charity of God and the communion of the Holy Spirit be with you all. Amen.
Philippians 2:1
Therefore if there is any consolation in Christ, if any comfort of charity, if any fellowship of the Spirit, if any bowels and mercies,
Philippians 3:10
That I may 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 are made partakers of Christ, if we hold the beginning of our confidence steadfast unto the end;

With his

1 John 5:10
He that believes in the Son of God has the witness of God in himself; he that does not believe God has made God a liar; because he does not believe the witness that God has testified of his Son.
Colossians 1:13
who has delivered us from the power of darkness, and has translated us into the kingdom of his dear Son,
1 Thessalonians 1:10
and to wait for his Son from the heavens, whom he raised from the dead, even Jesus, who delivered us from the wrath to come.

General references

Numbers 10:32
And it shall be, if thou go with us, that when we come into the goodness that the LORD shall do unto us, that we will do thee good.
Mark 4:22
For there is nothing hid which shall not be manifested; nor secret which shall not be exposed.
Luke 24:48
And ye are witnesses of these things.
John 20:30
And Jesus truly did many other signs in the presence of his disciples, which are not written in this book;
Philippians 1:5
for your fellowship in the gospel from the first day until now,