A highly polite version of the subject particle (이/가).
Usage
•
Attached to the person who is the subject of the sentence.
•
Replaces 이/가 when the subject is someone deserving respect (parents, teachers, elders).
Nuance
It shows high respect to the subject. Often paired with the honorific verb ending -(으)시-.
In Context
부모님께서 말씀하셨어요.
My parents spoke.
할아버지께서 오십니다.
Grandfather is coming.