The imperative mood of a verb is that of a command.
Command to either do or not do something.
Request to do or not do something (e.g., prayers).
As in many Indo-Eurepean languages, the
indicative (statement of fact) mood is the
same as the
imperative (command or request) mood so
context is needed to determine which is which.
Since commands are not (usually) given to oneself, there is no first person, only second or third person.