What is the origin of the idiom "after one's own heart" and when to use it?

The idiom "after one's own heart" originated during the Middle Ages in English language usage. It draws upon the metaphorical concept of the heart as the center of one's emotions, desires, and character. The idea behind the expression is that when someone is "after one's own heart," they possess qualities, preferences, or values that resonate deeply with the individual. The idiom is used to describe someone who shares the same qualities, preferences, or values as the person being referred to. It is typically used to express approval, admiration, or affection for the individual. It signifies a strong sense of connection and compatibility based on shared characteristics or beliefs.