think the sun rise and set on sb

What is the origin of the idiom "think the sun rise and set on someone" and when to use it?

The origin of the idiom "think the sun rises and sets on someone" is based on the admiration and importance attributed to the sun. It represents the belief that the person being described is considered the most special and significant individual in someone's life. The rising and setting of the sun symbolize the beginning and end of each day, highlighting the profound impact and influence the person holds in the eyes of the one using the idiom.