Galatians 4:21-23 Living Bible (TLB)
21 Listen to me, you friends who think you have to obey the Jewish laws to be saved: Why don’t you find out what those laws really mean? 22 For it is written that Abraham had two sons, one from his slave-wife and one from his freeborn wife. 23 There was nothing unusual about the birth of the slave-wife’s baby. But the baby of the freeborn wife was born only after God had especially promised he would come.