1 Nephi 1:15

15  And after this manner was the language of my father in the praising of his God; for his soul did rejoice, and his whole heart was filled, because of the things which he had seen, yea, which the Lord had shown unto him.

     "...his soul did rejoice..."

-this is curious behavior in light of the terrible things he was seeing:  the destruction of Jerusalem, the murder of his countryman, the apostasy of Israel, etc.  This naturally begs the question:  Why was Lehi moved to rejoice?

-why did he rejoice after viewing the destruction of Jerusalem?  He must have seen more and understood the big picture (verse 14).  Lehi was coming to know the goodness and mysteries of God.