Wo unto Him That Rejecteth the Word of God

Nephi prophesies about the coming forth of the Book of Mormon in the last days.

“…The Lord God hath said that the words of the faithful should speak as it were from the dead. Wherefore, the Lord God will proceed to bring forth the words of the book; and in the mouth of as many witnesses as seemeth him good will he establish his word; and wo be unto him that rejecteth the word of God!” (2 Nephi 27:13-14)

Questions:

-How many witnesses are there of the Book of Mormon?

-Is it important for you to be able to witness, one way or the other, as to whether the Book of Mormon is divinely inspired or not? How can you know? (Moroni 10:3-5)

-What are the consequences of rejecting the word of God? Are the consequences the same if one rejects it after superficial exposure to it versus after a prayerfully fair and lengthy reading?

-Would some reject the word of God even after receiving a witness from the Spirit that it is true? If so, what would lead them to do so?