Mark 1 begins with the introduction of John the Baptist, who preaches a message of repentance and prepares the way for Jesus Christ, who is the Son of God.Jesus is baptized by John and then spends 40 days and nights in the wilderness, where he is tempted by Satan. Jesus begins his public ministry by calling his first disciples, who leave their jobs and families to follow him.Jesus then begins his ministry of teaching in Galilee, performing miracles such as healing the sick, casting out demons, and calming a storm.The chapter closes with Jesus healing a leper and telling him not to tell anyone, but the news of this miracle spreads quickly. The chapter sets the stage for the rest of Mark's Gospel, showing the power and authority of Jesus and the call for repentance and faith in him.