And she made a vow, pleading, “O LORD of Hosts, if only You will look upon the affliction of Your maidservant and remember me, not forgetting Your maidservant but giving her a son, then I will dedicate him to the LORD all the days of his life, and no razor shall ever come over his head.” ... I prayed for this boy, and since the LORD has granted me what I asked of Him,
Then you will call, and the LORD will answer; you will cry out, and He will say, ‘Here I am.’ If you remove the yoke from your midst, the pointing of the finger and malicious talk,
But the angel said to him, “Do not be afraid, Zechariah, because your prayer has been heard. Your wife Elizabeth will bear you a son, and you are to give him the name John.
But Abram replied, “O Lord GOD, what can You give me, since I remain childless, and the heir of my house is Eliezer of Damascus?” Abram continued, “Behold, You have given me no offspring, so a servant in my household will be my heir.”
So Sarai said to Abram, “Look now, the LORD has prevented me from bearing children. Please go to my maidservant; perhaps I can build a family by her.” And Abram listened to the voice of Sarai.
And I will bless her and will surely give you a son by her. I will bless her, and she will be the mother of nations; kings of peoples will descend from her.” Abraham fell facedown. Then he laughed and said to himself, “Can a child be born to a man who is a hundred years old? Can Sarah give birth at the age of ninety?” And Abraham said to God, “O that Ishmael might live under Your blessing!” But God replied, “Your wife Sarah will indeed bear you a son, and you are to name him Isaac. I will establish My covenant with him as an everlasting covenant for his descendants after him.
And because they cried out to God in battle, they were helped against their enemies, and the Hagrites and all their allies were delivered into their hands. Because they put their trust in God, He answered their prayers.
And when he prayed to Him, the LORD received his plea and heard his petition; so He brought him back to Jerusalem and to his kingdom. Then Manasseh knew that the LORD is God.
Not only that, but Rebecca’s children were conceived by one man, our father Isaac. Yet before the twins were born or had done anything good or bad, in order that God’s plan of election might stand, not by works but by Him who calls, she was told, “The older will serve the younger.”