The Attackers: The Many of Luke 1:2 Include Eyewitnesses of the Lord"s Incarnation & Writers of the Gospels Matthew & Mark; Luke"s Biblically Required Research Techniques Give Content Integrity to His Letter to Theophilus, Luke 1:3; Intent of Effort Is So that Theophilus Will Acquire Epignosis Understanding of the Life of Jesus, Luke 1:4a