Isaiah 58–66 closes the book with some of its brightest chapters. Isaiah 58 redefines fasting and the Sabbath. Isaiah 59 promises that the Redeemer shall come to Zion (59:20). Isaiah 60 begins “Arise, shine; for thy light is come.” Isaiah 61:1–3 describes One anointed to heal the brokenhearted, free the captives, and give “beauty for ashes”; Jesus stood up in the synagogue at Nazareth, read this passage, and announced, “This day is this scripture fulfilled in your ears” (Luke 4:16–21). The last chapters look forward to the Savior’s Second Coming and a new heaven and a new earth (65:17–25), when even the wolf and the lamb will feed together.
Isaiah 58 starts with a complaint people still make: “Wherefore have we fasted… and thou seest not?” The Lord’s answer is blunt. They went hungry, but on the same day they chased their own pleasure, pushed their workers, and picked fights (58:3–5). The fast He chooses is aimed at burdens: loosing the bands of wickedness, undoing heavy burdens, freeing the oppressed, feeding the hungry, and not hiding from people in need (58:6–7). Then come the promises: light breaking forth like the morning, the Lord answering “Here I am,” continual guidance, a soul like a watered garden, and the title “repairer of the breach” (58:8–12).
How the Church fasts today: on one Sunday each month, members who are able go without food and drink for two consecutive meals (about 24 hours), pray with a purpose, and give a fast offering at least equal to the cost of those meals, and generously more if they can. The bishop uses fast offerings to help people in need. Important for this age group: not everyone should fast from food. The Church teaches that members who are physically able should fast (Gospel Principles, chapter 25), so health comes first. A youth with diabetes, another medical condition, or a history of disordered eating should talk with their parents and doctor and can keep the spirit of Isaiah 58 by fasting from something else (a phone, social media, a habit) while praying with purpose and giving. Never praise not eating, and never comment on anyone’s body.
Isaiah 58:13–14 invites us to call the Sabbath a delight by turning from our own pleasure to the Lord. Your 16- to 18-year-olds are about to live on their own at college, at work, or on a mission, where no parent will wake them for church or remind them it’s fast Sunday. Help them see fasting and the Sabbath as tools they choose, not rules they endure. Keep the tone honest: sometimes a fast doesn’t bring the answer we wanted, and the promise “Here I am” (58:9) is first a promise of His presence.