The shores of the sea of Galilee as well as the lake itself were the scenes of many of the most remarkable events recorded in the Gospels." 2. The Four Gospels.--All careful students of the New Testament must have observed that the books of Matthew, Mark, and Luke, treat the events of the Savior's sayings and doings in Galilee with greater fulness than they accord to His work in Judea; the book or Gospel of John, on the other hand, treats particularly the incidents of our Lord's Judean ministry, without excluding, however, important events that occurred in Galilee. In style of writing and method of treatment, the authors of the first three Gospels (evangelists as they and John are collectively styled in theologic literature) differ more markedly from the author of the fourth Gospel than among themselves. The events recorded by the first three can be more readily classified, collated, or arranged, and in consequence the Gospels written by Matthew, Mark, and Luke are now commonly known as the Synoptics, or Synoptic Gospels. 3. Thirty Years of Age.--According to Luke (3:23) Jesus was about thirty years of age at the time of His baptism, and we find that soon thereafter, He entered publicly upon the work of His ministry. The law provided that at the age of thirty years the Levites were required to enter upon their special service (Numb. 4:3). Clarke, _Bible Commentary_, treating the passage in Luke 3:23, says: "This was the age required by the law to which the priests must arrive before they could be installed in their office." Jesus may possibly have had regard for what had become a custom of the time, in waiting until He had attained that age before entering publicly on the labors of a Teacher among the people. Not being of Levitical descent He was not eligible to priestly ordination in the Aaronic order, and therefore, certainly did not wait for such before beginning His ministry. To have taught in public at an earlier age would have been to arouse criticism, and objection, which might have resulted in serious handicap or hindrance at the outset.