Galatians 4:28-29

Example of Hagar and Sarah

²⁸ Now you, ₁ brothers, _m like Isaac, _n are children of promise. ²⁹ But just as at that time he who was born according to the flesh _o persecuted him who was born according to the Spirit, _p so also it is now.

1. Cross References
   Galatians 4:23
   But the son of the slave was born according to the flesh, while the son of the free woman was born through promise.
   
2. Cross References
   Romans 9:8
   This means that it is not the children of the flesh who are the children of God, but the children of the promise are counted as offspring.
   Galatians 3:29
   And if you are Christ's, then you are Abraham's offspring, heirs according to promise.
   
3. Cross References
   Genesis 21:9
   But Sarah saw the son of Hagar the Egyptian, whom she had borne to Abraham, laughing.
   
4. Cross References
   Galatians 5:11
   But if I, brothers, still preach circumcision, why am I still being persecuted? In that case the offense of the cross has been removed.