"The understanding of the children of men"

1. 1 Ne. 13: 29
   
   

     29 And after these plain and precious things were ^ataken away it goeth forth unto all the nations of the Gentiles; and after it goeth forth unto all the nations of the Gentiles, yea, even across the many waters which thou hast seen with the Gentiles which have gone forth out of captivity, thou seest—because of the many plain and precious things which have been taken out of the book, which were plain unto the understanding of the children of men, according to the plainness which is in the Lamb of God—because of these things which are taken away out of the gospel of the Lamb, an exceedingly great many do stumble, yea, insomuch that Satan hath great power over them.
2. Mosiah 8: 20
   
   

     20 O how marvelous are the works of the Lord, and how long doth he suffer with his people; yea, and how ^ablind and impenetrable are the understandings of the children of men; for they will not seek wisdom, neither do they desire that she should rule over them!