This is the 16577th most frequent Russian word.
священник
Priest.
In this sentence, 'священник' is used as a noun to refer to a religious leader performing their role during a ceremony.
Священник проводил службу в церкви.
The priest conducted the service in the church.
Here, 'священником' is the instrumental case of the noun, indicating the role or profession someone aims to take.
Молодой человек решил стать священником.
The young man decided to become a priest.
In this example, 'священника' is the accusative case of the noun, indicating that the priest is the direct object of the action.