Luke 1:57-80, tells of the birth of John the Baptist and Zechariah’s song.
1 Samuel 17 gives a vivid rendition of how David defeated Goliath. Just read it, it is great reading.
1 Samuel 18. Saul began to resent David, and no wonder, women started chanting “Saul hath slain his thousands, and David his ten thousands.” Saul’s daughter Michal fell in love with David, and Saul let them marry after a rather unusual dowry, but he became more and more suspicious and afraid of David.
In 1 Samuel 19 Saul’s paranoia is fully developed, and he persecuted David, trying to kill him over and over again.