God's Promise and Our Suffering

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But this is to be observed as the chief reason for God’s conduct, that as the holy seed was given from heaven, it must not be produced according to the common order of nature, to the end, that we learn that the Church did not originate in the industry of man, but flowed from the grace of God alone.
— John Calvin
[God’s] promise requires an end to grasping and certitude and an embrace of precariousness. It is only God who gives life. Any pretense that the future is secured by rights or claims...is a deception.
— Walter Brueggemann

Genesis 25:19-28

19 These are the generations of Isaac, Abraham's son: Abraham fathered Isaac,20 and Isaac was forty years old when he took Rebekah, the daughter of Bethuel the Aramean of Paddan-aram, the sister of Laban the Aramean, to be his wife.21 And Isaac prayed to the Lord for his wife, because she was barren. And the Lord granted his prayer, and Rebekah his wife conceived. 22 The children struggled together within her, and she said, “If it is thus, why is this happening to me?” So she went to inquire of the Lord. 23 And the Lord said to her,

“Two nations are in your womb,
and two peoples from within you shall be divided;
the one shall be stronger than the other,
the older shall serve the younger.”

24 When her days to give birth were completed, behold, there were twins in her womb. 25 The first came out red, all his body like a hairy cloak, so they called his name Esau. 26 Afterward his brother came out with his hand holding Esau's heel, so his name was called Jacob.[c] Isaac was sixty years old when she bore them.

27 When the boys grew up, Esau was a skillful hunter, a man of the field, while Jacob was a quiet man, dwelling in tents. 28 Isaac loved Esau because he ate of his game, but Rebekah loved Jacob.