D&C 19

As the Lord commands Martin Harris, He reveals some great incite concerning the suffering of the impenitent.  To which He says to Martin Harris -

"...I command you that you preach naught but repentance, and show not these things unto the world until it is wisdom in me.
22 For they cannot bear meat now, but milk they must receive; wherefore, they must not know these things, lest they perish."  (Doctrine and Covenants | Section 19:21 - 22)

What is interesting is that which I read separately this morning, as Moroni explains -

"...I have written upon these plates the very things which the brother of Jared saw; and there never were greater things made manifest than those which were made manifest unto the brother of Jared.
5 Wherefore the Lord hath commanded me to write them; and I have written them.  And he commanded me that I should seal them up; and he also hath commanded that I should seal up the interpretation thereof; wherefore I have sealed up the interpreters, according to the commandment of the Lord.
6 For the Lord said unto me: They shall not go forth unto the Gentiles until the day that they shall repent of their iniquity, and become clean before the Lord."  (Book of Mormon | Ether 4:4 - 6)

Again, we much receive "milk" first and prove worthy before greater things will be revealed.