“What Are These Stumbling Blocks”

"The stumbling blocks spoken of by the angel appeared to be of two types: (1) the ignorance and uncertainty which came as a result of the loss of the plain and precious truths from the Bible; and (2) the Book of Mormon and the message of the Restoration themselves which would serve as stumbling blocks to the impenitent and hard-hearted of the latter days. In the meridian of time Paul wrote: 'We preach Christ crucified, unto the Jews a stumbling block, and unto the Greeks foolishness' (1 Corinthians 1:23)." (McConkie and Millet, Doctrinal Commentary on the Book of Mormon, vol. 1, p. 106)