D&C 76: 116-117 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; To whom he grants this privilege of seeing and knowing for themselves;
D&C 38:7 "But behold, verily, verily, I say unto you that mine eyes are upon you. I am in your midst and ye cannot see me;"
How important is sight?
Luke 7: 21 "And in that same hour he cured many of their infirmities and plagues, and of evil spirits; and unto many that were blind he gave sight"
The Lord still gives sight to those who see, but cannot see. Luke 8:10: "And he said, unto you it is given to know the mysteries of the kingdom of God: but to others in parables; that seeing they might not see, and hearing they might not understand."