Galatians 4:1

Now as long as the heir is a child, he differeth nothing from a servant, though he is to be lord of all:

Galatians 4:23

But he who was of the servant, was born according to the course of nature; whereas the son of the free-woman was by virtue of the promise.

Galatians 4:29

But as then he that was born after the flesh, persecuted him who was born after the Spirit, even so it is 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;

Bible References

That

Galatians 4:23
But he who was of the servant, was born according to the course of nature; whereas the son of the free-woman was by virtue of the promise.