What does it mean to be a child of Abraham? Who can be Abraham’s children, and why does that matter? Genesis 12:1-17:27; Isaiah 40:27-41:16; Jeremiah 31:31-34; Joel 2:27-32; Luke 3:7-9; John 8:12-47; Acts 2:14-21; Romans 2:13-17, 11:11-24; Hebr