Luke 1:1-56, to Theophilus. The birth of John the Baptist was foretold to Zacharias by an Angel, then the angel Gabriel made an announcement to Mary. Mary met Elizabeth, Zacharias’ wife, and stayed with her. It also contains Mary’s song and Zacharias’ prophecy.
1 Samuel 15 is the chapter where Saul is rejected by God as King.
1 Samuel 16. Samuel anointed David as King after rejecting all of David’s older brothers and David entered into Saul’s service while Saul was still the titular King. Whenever Saul’s spirit troubled him David played for him and that soothed Saul.