That is, They which are the children of the flesh, these are not the children of God…
One of my hearers used to keep puzzling himself fearfully with that passage in Scripture about Jesus weeping over Jerusalem. He went and looked at Dr. Gill about it, he went to Thomas Scott about it, and he went to Matthew Henry about it; and these good divines all puzzled him as much as they could, but they did not seem to clear up the matter. The good man could not understand how Jesus Christ could say as He did, "How often would I have gathered thee, but thou wouldst not!" One day he received more grace, and got to have a love for souls, and then the old skin of narrowmindedness which had been large enough for him once began to crack and break, and he went to the passage then, and said, "I can understand it now; I do not know how it is consistent with such and such a doctrine, but it is very consistent with what I feel in my heart." And I feel just the same. I used to be puzzled by that passage where Paul says that he could wish himself accursed from God for his brethren's sake. Why, I have often felt the same, and now I understand how a man can say in the exuberance of his love to others, that he would be willing to perish himself if he might save them. Of course it never could be done, but such is the extravagance of a holy love for souls that it breaks through reason, and knows no bounds. Get the heart right and you get right upon many difficult points.
(C. H. Spurgeon.)
Parallel VersesKJV: That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.