“Now we, brethren, as Isaac was, are the children of promise.”
King James Version (KJV)
4:28 Now we - Who believe, whether Jews or Gentiles. Are children of the promise - Not born in a natural way, but by the supernatural power of God. And as such we are heirs of the promise made to believing Abraham.
Ga 4:28 Now we, brethren, as Isaac was, are the children of promise. As Isaac was the child of promise, so are we, Gentile and Jewish Christians, of the promise to Abraham of a Seed in which all nations should be blessed.