Ephesians 3:6

This secret plan is that the Gentiles [now] share in the inheritance along with us [Jews], and are fellow-members of the body [i.e., the church], and that they share, along with us [Jews], in the promise of the Gospel, in [fellowship with] Christ Jesus.

Galatians 3:14

[This happened] so that the blessing [promised] to Abraham might be received by the Gentiles through [the person and work of] Christ, so that we might receive the promised [gift of the] Holy Spirit through [our] faith [in Jesus].

Romans 8:15-17

For you did not receive the Holy Spirit, to enslave you again to fear, [Note: Some translators take "Holy Spirit" here to be "spirit," making the verse say "you did not receive the spirit of slavery"], but you received the Holy Spirit [who produces] sonship, so we can call out, "Abba", [which means] "Father."

Romans 12:4-5

For there are many parts to a single human body and all of these parts do not have the same function.

1 Corinthians 12:12

For [just] as the human body is one [unit], made up of many parts, and all the many parts make up a single body, so it is with Christ. [Note: Just as a human body is a single unit, and Christ is a single being, so the members of His body, the church, constitute one body. See verses 27-28].

1 Corinthians 12:27

Now you people are the [spiritual] body of Christ and each one of you is an individual part of it.

Galatians 4:5-7

so that He could buy back [from Satan] those who were [still] under [obligation to] the law of Moses, and that we could become adopted children.

Ephesians 2:13-22

But now [that you are] in [fellowship with] Christ, you [Gentiles], who were once far away [from God], have been brought near [to Him] through the blood of Christ.

Ephesians 4:15-16

But [instead], we should speak [and practice] truth in a loving way, so that we can, in all respects, grow up [spiritually] into [union with] Christ, who is the head [i.e., of His body, the church].

Ephesians 5:7

So, do not participate with such individuals,

Ephesians 5:30

because we are parts of His [spiritual] body.

Colossians 2:19

He is not holding on [firmly] to the head [i.e., Christ, the head of the church], from whom the entire body, being nourished and supported by its ligaments and joints, is caused to grow in size by God.

1 John 1:3

We declare to you what we have seen and heard [concerning Christ], so that you also may share a relationship with us. And indeed, our fellowship is with the Father and with His Son Jesus Christ.

1 John 2:25

And this is the promise which Christ [or, "God"] has given to us: [It is] never ending life. [Note: This passage may mean that God promised us "the Eternal Life," that is, Christ, See John 3:16].

Galatians 3:26-29

For all of you are children of God through your faith in Christ Jesus [as God's only Son].

Treasury of Scripture Knowledge

Summary

That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:

Bible References

The same

Ephesians 4:15
But [instead], we should speak [and practice] truth in a loving way, so that we can, in all respects, grow up [spiritually] into [union with] Christ, who is the head [i.e., of His body, the church].
Ephesians 5:30
because we are parts of His [spiritual] body.
Romans 12:4
For there are many parts to a single human body and all of these parts do not have the same function.
1 Corinthians 12:12
For [just] as the human body is one [unit], made up of many parts, and all the many parts make up a single body, so it is with Christ. [Note: Just as a human body is a single unit, and Christ is a single being, so the members of His body, the church, constitute one body. See verses 27-28].
Colossians 2:19
He is not holding on [firmly] to the head [i.e., Christ, the head of the church], from whom the entire body, being nourished and supported by its ligaments and joints, is caused to grow in size by God.

General references

Luke 13:29
And people will come from the east and west and from the north and south to sit down in the kingdom of God.
Romans 3:29
Or is God the God of the Jews only? Is He not the God of the Gentiles also? Yes, [indeed], of the Gentiles also,
Philippians 1:5
for your sharing [with me] in [carrying on] the work of the Gospel from the first day [I left there] until now. [See 4:14-16].