+ First Luminous Mystery: The Baptism of Christ
The First Luminous Mystery of the Rosary is the Baptism of Christ. It's a meditation on Christ's baptism in the River Jordan by St John the Baptist, which marked the start of his public ministry.
The Baptism of Christ (Matthew 3:13-17)
The baptism of Christ in the River Jordan is described in all four gospels. This event marked the start of his public ministry as the Messiah.