Galatians 4:7

So you are no longer a slave, but a son; and if a son, then an heir by God's own act.

Romans 8:16-17

The Spirit Himself bears witness with our spirits that we are God's children;

1 Corinthians 3:21-23

So let no one boast in men. For everything belongs to you --

2 Corinthians 6:16-18

And what agreement can a temple of God make with idols? For we are the temple of the living God, just as God said: "I will live in them and walk in them, and I will be their God and they will be my people."

Galatians 3:26

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

Galatians 3:29-2

And if you belong to Christ, then you are real descendants of Abraham, and heirs in accordance with the promise made to him.

Galatians 4:5-6

to ransom those who were subject to law, so that we might be adopted as sons.

Galatians 4:31-1

So, brothers, we are children, not of a slave girl but of a free woman.

Revelation 21:7

Whoever conquers will come into possession of these things, and I will be his God and he will be my son.

Treasury of Scripture Knowledge

Summary

Wherefore thou art no more a servant, but a son; and if a son, then an heir of God through Christ.

Bible References

Thou

Galatians 4:1
I mean this: As long as the heir is under age he is not a whit better off than a slave, although he is heir of all the property,
Galatians 5:1
This is the freedom with which Christ has made us free. So keep on standing in it, and stop letting your necks be fastened in the yoke of slavery again.

If

Galatians 3:29
And if you belong to Christ, then you are real descendants of Abraham, and heirs in accordance with the promise made to him.
Romans 8:16
The Spirit Himself bears witness with our spirits that we are God's children;