Genesis 25:21
And Isaac entreated the LORD for his wife, because she was barren: and the LORD was entreated of him, and Rebekah his wife conceived.
Torrey's Topical Textbook—AKJV

1 Samuel 1:27
For this child I prayed; and the LORD has given me my petition which I asked of him:
Torrey's Topical Textbook—AKJV

Luke 1:13
But the angel said to him, Fear not, Zacharias: for your prayer is heard; and your wife Elisabeth shall bear you a son, and you shall call his name John.
Torrey's Topical Textbook—AKJV