D&C 5

 Having had already lost the 116 first translated sheets, Martin Harris listens as the Lord speaks directly to Joseph Smith - 

"...you, my servant Joseph Smith, Jun., have got the plates of which you have testified and borne record that you have received of me;

2 And now, behold, this shall you say unto him—he who spake unto you, said unto you: I, the Lord, am God, and have given these things unto you, my servant Joseph Smith, Jun., and have commanded you that you should stand as a witness of these things;

3 And I have caused you that you should enter into a covenant with me, that you should not show them except to those persons to whom I commanded you; and you have no power over them except I grant it unto you.

4 And you have a gift to translate the plates; and this is the first gift that I bestowed upon you; and I have commanded that you should pretend to no other gift until my purpose is fulfilled in this; for I will grant unto you no other gift until it is finished.

5 Verily, I say unto you, that woe shall come unto the inhabitants of the earth if they will not hearken unto my words..."  (Doctrine and Covenants 5:1–5)

It is clear what the Lord expected of the Prophet.  He expected him to be obedient in all things.