1 John 1:3

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

1 Corinthians 1:9

Faithful is God, by whom ye have been called into communion with his Son Jesus Christ our Lord.

1 John 1:1

THAT which was from the beginning, which we have seen with our eyes, which we have gazed upon, and our hands have handled of the word of life;

Philippians 2:1

IF there be then any consolation in Christ, if any comfort of love, if any communion of spirit, if any bowels and compassions,

John 17:3

and this is eternal life, that they should know thee the only true God, and him whom thou hast sent, Jesus, the Messiah.

John 17:21

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

Acts 4:20

For we cannot refrain from speaking the 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 communion of the Holy Ghost be with you all. Amen.

Philippians 3:10

that I may know him, and the virtue of his resurrection, and communion with his sufferings, being conformed to his death;

1 John 1:7

but if we walk in the light, as he is himself in the light, we have communion with each other, and the blood of Jesus Christ his Son cleanseth us from all sin.

John 14:20-23

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

John 17:11

And now no longer am I in this world, but these are in the world, and I am coming to thee. Holy Father! preserve them for thy name's sake whom thou hast given me, that they may be one, as we are.

John 17:25

Righteous Father! though the world hath not known thee, yet I have known thee, and these have known that thou hast sent me.

Acts 2:42

And they persevered stedfastly in the doctrine of the apostles, and in communion, and in breaking bread, and in prayers.

Acts 13:32

And we preach to you the promise made to our fathers;

Acts 13:41

"Behold, ye despisers, and wonder, and perish: for I do a work in your days, a work which ye shall in no wise believe, though one declare it unto you."

Acts 20:27

For I have concealed nothing, so as not repeatedly to declare to you the whole counsel of God.

Romans 15:27

They have been so pleased indeed, and their debtors they are. For if the Gentiles have been admitted to a participation in their spiritual things, they ought also to minister to them in carnal things.

1 Corinthians 1:30

But of him are ye in Christ Jesus, who hath been made to us of God wisdom, and righteousness, and sanctification, and redemption:

1 Corinthians 15:1

NOW I make known unto you, brethren, the gospel which I have preached unto you, and which ye have received, in which also ye have stood fast;

Ephesians 3:6

that the Gentiles should be co-heirs, and of the same body, and sharers with them of his promise in Christ by the Gospel:

Philippians 1:7

as it is right for me to think this of you all, because I bear you on my heart, both in my bonds and in my defence and the confirmation of the gospel, as being all of you sharers in my grace.

Colossians 1:13

who hath plucked us out from the dominion of darkness, and transferred us into the kingdom of the Son of his love:

1 Thessalonians 1:10

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

1 Timothy 6:2

But they who have believing masters, let them not think less of them, because they are brethren; but serve them the rather, because they are faithful and beloved, who have equally partaken of the benefit. These things teach and enjoin.

Hebrews 2:12

saying, "I will declare thy name to my brethren, in the midst of the church I will sing hymns to thee."

Hebrews 3:1

WHEREFORE, holy brethren, partakers of the heavenly calling, contemplate the apostle and high-priest whom ye confess, Jesus Christ;

Hebrews 3:14

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

1 Peter 5:1

THE presbyters among you I exhort, who am a co-presbyter and a witness of the sufferings of Christ, and a partaker of the glory which shall be revealed:

1 John 1:5

And this is the promise which we have heard from him, and declare unto you, that God is light, and that darkness in him there is none.

1 John 2:23-24

Every one that denieth the Son, neither doth he hold the Father; but he that acknowledgeth the Son, holdeth the Father also.

1 John 5:10-11

He that believeth on the Son of God, hath the testimony in himself; he that believeth not God, hath made him a liar, because he hath not believed on the testimony which God 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
And this is the promise which we have heard from him, and declare unto you, that God is light, and that darkness in him there is none.
John 17:25
Righteous Father! though the world hath not known thee, yet I have known thee, and these have known that thou hast sent me.
Acts 13:32
And we preach to you the promise made to our fathers;
Acts 20:27
For I have concealed nothing, so as not repeatedly to declare to you the whole counsel of God.
1 Corinthians 15:1
NOW I make known unto you, brethren, the gospel which I have preached unto you, and which ye have received, in which also ye have stood fast;
Hebrews 2:12
saying, "I will declare thy name to my brethren, in the midst of the church I will sing hymns to thee."

Our fellowship

1 John 1:7
but if we walk in the light, as he is himself in the light, we have communion with each other, and the blood of Jesus Christ his Son cleanseth us from all sin.
1 John 2:23
Every one that denieth the Son, neither doth he hold the Father; but he that acknowledgeth the Son, holdeth the Father also.
John 14:20
In that day ye shall know that I am in the Father, and ye in me, and I in you.
John 17:3
and this is eternal life, that they should know thee the only true God, and him whom thou hast sent, Jesus, the Messiah.
1 Corinthians 1:9
Faithful is God, by whom ye have been called into communion with his Son Jesus Christ our Lord.
2 Corinthians 13:14
The grace of the Lord Jesus Christ, and the love of God, and the communion of the Holy Ghost be with you all. Amen.
Philippians 2:1
IF there be then any consolation in Christ, if any comfort of love, if any communion of spirit, if any bowels and compassions,
Philippians 3:10
that I may know him, and the virtue of his resurrection, and communion with his sufferings, being conformed to his death;
Hebrews 3:14
For we are partakers with Christ, if we hold the beginning of our confidence firm unto the end;

With his

1 John 5:10
He that believeth on the Son of God, hath the testimony in himself; he that believeth not God, hath made him a liar, because he hath not believed on the testimony which God testified of his Son.
Colossians 1:13
who hath plucked us out from the dominion of darkness, and transferred us into the kingdom of the Son of his love:
1 Thessalonians 1:10
and to wait for his Son from the heavens, whom he raised from the dead, even Jesus, who delivereth us from the wrath to come.

General references

Mark 4:22
For there is nothing hid, but that it should be brought to light, nor is any thing concealed, but that it should come into open day.
Luke 24:48
And ye are the witnesses of these things.
John 20:30
Now many other miracles did Jesus therefore also 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 even until now;