Alma 11:46 "the people began again to be astonished, and also Zeezrom began to tremble"

As I read the account of Alma and Amulek preaching to the people of Ammonihah, I pondered the question, "What reached Zeezrom"?  He was a very learned and logical man.  He was very confident in his abilities to debate and persuade.  But at some point in his interaction with Amulek, the Spirit began to reach him.  What led to this?  It was not that he was impressed by Amulek, a man of 'no small reputation'.  It was not the fact that there are now two witnesses.  He did not seem overly impressed by Amulek's personal experiences with seeing an angel.  It did not seem to be Amulek's reminder that when people choose wickedness they are setting themselves up for destruction.  Even his initial personal accusation that Zeezrom is a child of hell did not seem to be what reached him.  What seemed to get to Zeezrom were the doctrines and testimony of Jesus Christ.  When Amulek taught these doctrines, the Holy Ghost carried them to Zeezrom's heart. And he finally let them in.  Then he began to tremble.  Then he began to acknowledge his guilt.  Then he desired the deliverance of the Savior.  I can apply this in at least two ways.  First, I can humble myself, exercise faith and constantly strive to remember Christ and my constant need for His deliverance.   Second, I can be more bold in my teaching and testifying of the Savior, as prompted by the Spirit.   It is when people are touched by the doctrine of Christ and finally acknowledge their dependence on Him for their eternal happiness that they humble themselves and repent.  We need a consciousness of our own guilt (see verse 1 of Ch 12).  Other things we learn about Zeezrom in the next chapter - he is convinced more and more of the power of God; he began to inquire diligently.  The nature, sincerity and purpose of his questions changed.  He began to have a mighty change of heart.  And this man who was so prideful and reliant upon his own wisdom at the beginning of the account was truly converted and delivered by the power of the atonement of Christ.  He went on to be a great missionary, bringing the blessings of the gospel to many.