John the Baptist, the son of Zacharias and Elisabeth from week 1, now preaches in the wilderness in camel’s hair, living on locusts and wild honey (Matthew 3:4). His message is repentance, and his images are vivid: an axe at the root of trees that bear no good fruit, a winnowing fan that separates wheat from chaff, valleys filled and crooked paths made straight (Luke 3:4–9, 17; Isaiah 40:3–4). He warns people not to rely on their ancestry (“We have Abraham to our father”) and calls for “fruits worthy of repentance” (Luke 3:8): change you can see.
The most practical verses are Luke 3:10–14. The people, the tax collectors and the soldiers each ask, “What shall we do?” John gives each a specific answer: share your extra coat and food; don’t collect more than you’re supposed to; don’t use force or false accusations, and be content with your wages. For 16- to 18-year-olds with first jobs, car keys, group chats and growing independence, this is repentance in real clothes. The manual invites them to notice what attitudes and behaviors show that someone is truly repenting, and points to the section “Jesus Christ Will Help You” in For the Strength of Youth: A Guide for Making Choices.
Jesus, who had no sin, came to be baptized, and John protested that he needed to be baptized by Jesus instead. Jesus answered that it was right to “fulfil all righteousness” (Matthew 3:13–15; 2 Nephi 31:5–9 explains that He showed us the way and witnessed His obedience to the Father). When He came up out of the water, the heavens opened, the Spirit descended like a dove, and the Father’s voice declared His beloved Son (Matthew 3:16–17): three separate members of the Godhead at one moment. John also promised that the One coming after him would baptize “with the Holy Ghost, and with fire” (Matthew 3:11); the gift of the Holy Ghost is a continuing, refining baptism (2 Nephi 31:17; 3 Nephi 9:20).
John held the keys of the Aaronic Priesthood, and he returned as a resurrected being to restore that priesthood to Joseph Smith and Oliver Cowdery in 1829 (D&C 13:1; Joseph Smith—History 1:68–72). Priests in your class hold the authority to baptize today (D&C 20:46). Every youth in the room, young women and young men alike, made the same baptismal covenant and can help “prepare the way” for friends and family. Mark 1 adds two quick scenes worth mentioning: fishermen who left their nets “straightway” (Mark 1:16–20) and Jesus rising early to pray alone (Mark 1:35).