D&C 76

 With all the marvelous revelations revealed in the 76th Section, I find it interesting that in conclusion - 

"But great and marvelous are the works of the Lord, and the mysteries of his kingdom which he showed unto us, which surpass all understanding in glory, and in might, and in dominion;

115 Which he commanded us we should not write while we were yet in the Spirit, and are not lawful for man to utter;

116 Neither is man capable to make them known, for they are only to be seen and understood by the power of the Holy Spirit, which God bestows on those who love him, and purify themselves before him;

117 To whom he grants this privilege of seeing and knowing for themselves..."  (Doctrine and Covenants 76:114–117)

Obviously, there is even more knowledge that can still be obtained.