Question

what is the profession of the thief

Answer 1

Obviously the profession of a their would be stealing costly things.

Answer 2

The profession of thief is not respectable but it doesn't mean, he doesn't have a profession .

The profession of thief is to steal things. Some thiefs leave people in distress stealing things which may cost a life. Some thiefs steal from the corruptors , rich persons and donate to the poor.

Hope helped!