Who does it say, “he is my right hand”? What does this expression mean?

The expression “he is my right hand” is a metaphor used to describe someone who is an indispensable part of your life or work. It means that the person is so important to you that they are almost like an extension of yourself. This person is someone who you rely on to help you get things done, and who you trust to have your back in any situation. They are your confidant, your partner in crime, and your go-to person for advice and support. This phrase implies that the person is not only reliable, but also loyal and trustworthy. It is a way to express the deep bond and connection you have with someone, and the strong level of trust and reliance that exists between the two of you.