Matthew 3, Mark 1 and Luke 3 all open the Savior’s public ministry with John the Baptist. Luke dates the moment like a historian, naming Tiberius Caesar, Pontius Pilate, Herod, and the high priests Annas and Caiaphas (Luke 3:1–2). John preaches near the Jordan River dressed in camel’s hair with a leather girdle, living on locusts and wild honey (Matthew 3:4), an appearance that recalls Elijah (2 Kings 1:8). All three Gospels apply Isaiah 40:3 to him: the voice crying in the wilderness to prepare the way of the Lord.
Luke 3:10–14 is the practical heart of this lesson. Three groups ask John, “What shall we do?” and he sends none of them to the desert. The crowd should share coats and food. The publicans, tax collectors who could easily pad what they collected, should take no more than was appointed. The soldiers should not extort by force or false accusation, and should be content with their wages. For John, repentance looks like honest work and open hands: “fruits worthy of repentance” (Luke 3:8).
Then Jesus comes from Galilee to be baptized. John protests that he needs to be baptized by Jesus, and the Savior answers that “thus it becometh us to fulfil all righteousness” (Matthew 3:15). Nephi saw this six centuries earlier and explained why: though holy, the Savior humbled Himself before the Father, witnessed that He would keep His commandments, and showed us the gate and the narrow path (2 Nephi 31:5–10). As He came up out of the water, the Spirit descended like a dove and the Father’s voice spoke from heaven, three distinct members of the Godhead in one scene (Matthew 3:16–17). Luke adds a small detail worth pointing out: the heaven opened while Jesus was praying (Luke 3:21).
John also matters to the Restoration. On May 15, 1829, he returned as a resurrected messenger and conferred the Aaronic Priesthood, which holds the keys of baptism, on Joseph Smith and Oliver Cowdery (Doctrine and Covenants 13:1; Joseph Smith—History 1:68–72). Twenty-five minutes goes fast, so center the class on Luke 3:10–14 and Matthew 3:13–17. Mark 1, with its fishermen who leave their nets “straightway” and a Savior who rises before dawn to pray, is ready as a bonus step.