In reference to that which was sealed by Moroni, his charge to “touch them not in order that ye may translate” (Ether 5:1) appears to be a specific directive to Joseph Smith, the modern seer and translator, to not touch or translate the sealed portion of the plates. In speaking prophetically through Nephi1, the Savior said, presumably to that same seer, "Touch not the things which are sealed, for I will bring them forth in mine own due time; for I will show unto the children of men that I am able to do mine own work: (2 Nephi 27:21). [Joseph F. McConkie, Robert L. Millet, Brent L. Top, Doctrinal Commentary on the Book of Mormon, Vol. IV, p. 284]
Note* Moroni possessed “the keys of the record of the stick of Ephraim” (D&C 27:5). Addressing the prophet Joseph Smith nearly sixteen centuries in the future implies the power of those keys. [Alan C. Miner, Personal Notes]