In Luke 3 John the Baptist prepared the way and performed the baptism of repentance. Jesus’ was also baptized by John, after which “the Holy Ghost descended in a bodily shape like a dove upon him, and a voice came from heaven, which said, Thou art my beloved Son; in thee I am well pleased.” The chapter then lists the genealogy of Mary, from the human side of Jesus. (Matthew listed the genealogy of Joseph from the Kingly side, and since Joseph adopted Jesus as his own it showed Jesus became the rightful heir to the throne of David.)
In 1 Samuel 26 David Spared Saul’s Life a second time.
1 Samuel 27. David allied himself with the Philistines.