A Guidance Counselor.
An employer is the person who gives an employee a job.
The navigator.
a postman
A mentor
I assume you mean gives a command as in "Sit down, please!" It is called an imperative sentence.
Witness
A person who gives a statement is called a witness.
A Jerk
slave
a slave
A person who gives testimony can be referred to in different ways, depending on the circumstances. For examples:A Preacher or religious person gives (their) testimony.A court witness or defendant gives testimony.
@ssh0le.