Galatians 4:31

then, brethren, we are not a maid-servant's children, but the free-woman's.

John 1:12-13

but as many as did receive him to them he gave authority to become sons of God -- to those believing in his name,

John 8:36

if then the son may make you free, in reality ye shall be free.

Galatians 5:1

In the freedom, then, with which Christ did make you free -- stand ye, and be not held fast again by a yoke of servitude;

Galatians 5:13

For ye -- to freedom ye were called, brethren, only not the freedom for an occasion to the flesh, but through the love serve ye one another,

Hebrews 2:14-15

Seeing, then, the children have partaken of flesh and blood, he himself also in like manner did take part of the same, that through death he might destroy him having the power of death -- that is, the devil --

1 John 3:1-2

See ye what love the Father hath given to us, that children of God we may be called; because of this the world doth not know us, because it did not know Him;

Treasury of Scripture Knowledge

Summary

So then, brethren, we are not children of the bondwoman, but of the free.

Bible References

We

Galatians 5:1
In the freedom, then, with which Christ did make you free -- stand ye, and be not held fast again by a yoke of servitude;
John 1:12
but as many as did receive him to them he gave authority to become sons of God -- to those believing in his name,
John 8:36
if then the son may make you free, in reality ye shall be free.
Hebrews 2:14
Seeing, then, the children have partaken of flesh and blood, he himself also in like manner did take part of the same, that through death he might destroy him having the power of death -- that is, the devil --
1 John 3:1
See ye what love the Father hath given to us, that children of God we may be called; because of this the world doth not know us, because it did not know Him;