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,

Galatians 3:14

in order that the blessing of Abraham might come to the Gentiles in Christ Jesus, so that we might receive the promise of the Spirit through faith.

Romans 8:15-17

For you have not received a spirit of slavery [leading] to fear again, but you have received the Spirit of adoption, by whom we cry out, "Abba! Father!"

Romans 12:4-5

For just as in one body we have many members, but all the members do not have the same function,

1 Corinthians 12:12

For just as the body is one and has many members, but all the members of the body, [although they] are many, are one body, thus also Christ.

1 Corinthians 12:27

Now you are the body of Christ, and members {of it individually},

Galatians 4:5-7

in order that he might redeem those under the law, in order that we might receive the adoption.

Ephesians 2:13-22

But now in Christ Jesus you, the ones who once were far away, have become near by the blood of Christ.

Ephesians 4:15-16

But speaking the truth in love, we are to grow into him [with reference to] all [things], who is the head, Christ,

Ephesians 5:7

Therefore do not be sharers with them,

Ephesians 5:30

because we are members of his body.

Colossians 2:19

and not holding fast to the head, from whom the whole body, supported and held together by the ligaments and sinews, grows with the growth of God.

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 John 2:25

And this is the promise which he himself promised us: eternal life.

Galatians 3:26-29

For you are all sons of God through faith in Christ Jesus,

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 speaking the truth in love, we are to grow into him [with reference to] all [things], who is the head, Christ,
Ephesians 5:30
because we are members of his body.
Romans 12:4
For just as in one body we have many members, but all the members do not have the same function,
1 Corinthians 12:12
For just as the body is one and has many members, but all the members of the body, [although they] are many, are one body, thus also Christ.
Colossians 2:19
and not holding fast to the head, from whom the whole body, supported and held together by the ligaments and sinews, grows with the growth of God.

General references

Isaiah 19:23
On that day, there will be a highway from Egypt to Assyria, and Assyria will come into Egypt, and Egypt into Assyria, and Egypt will worship together with Assyria.
Luke 13:29
And they will come from east and west, and from north and south, and will recline at the table in the kingdom of God.
Romans 3:29
Or [is God] the God of the Jews only? [Is he] not also [the God] of the Gentiles? Yes, also of the Gentiles,
Philippians 1:5
because of your participation in the gospel from the first day until now,