Galatians 4:1
My point is this--As long as the heir is under age, there is no difference between him and a slave, though he is master of the whole estate.
Galatians 4:23
But the child of the slave-woman was born in the course of nature, while the child of the free woman was born in fulfillment of a promise.
Galatians 4:29
Yet at that time the child born in the course of nature persecuted the child born by the power of the Spirit; and it is the same now.
Treasury of Scripture Knowledge
Summary
Now I say, That the heir, as long as he is a child, differeth nothing from a servant, though he be lord of all;
That
Bible References
That
Galatians 4:23
But the child of the slave-woman was born in the course of nature, while the child of the free woman was born in fulfillment of a promise.