Promotion is a feature of the leveling system in nearly all of the Tactical RPGs of the series, as well as Shining the Holy Ark. Its function is to change a character's class to a more advanced one. When doing this, the character's level number is officially reset to 1.
Promoting to a more advanced class is necessary because after level 20(or in the cases of Shining the Holy Ark and Shining Force II: Ancient Sealing, after level 40) the character's stats will no longer increase. Moreover, characters of unpromoted classes cannot equip the most powerful weapons in the games.
How to PromoteEdit
Promoting can only be done through the services of a Priest. When you speak to a Priest, select the option "Promote" or "Class Change". The Priest will run down the list of party members and offer to promote any who are at level 10 or higher(or in the cases of Shining the Holy Ark and Shining Force II, level 20 or higher).