There is something familiar to us in these verses.
Alma 21:4 And it came to pass that Aaron came to the city of Jerusalem, and first began to preach to the Amalekites. And he began to preach to them in their synagogues, for they had built synagogues after the order of the Nehors; for many of the Amalekites and the Amulonites were after the order of the Nehors.
5 Therefore, as Aaron entered into one of their synagogues to preach unto the people, and as he was speaking unto them, behold there arose an Amalekite and began to contend with him, saying: What is that thou hast testified? Hast thou seen an angel? Why do not angels appear unto us? Behold are not this people as good as thy people?
6 Thou also sayest, except we repent we shall perish. How knowest thou the thought and intent of our hearts? How knowest thou that we have cause to repent? How knowest thou that we are not a righteous people? Behold, we have built sanctuaries, and we do assemble ourselves together to worship God. We do believe that God will save all men.
The words of this Amalekite should sound familiar to us. We hear questions similar to those found in verse 6 passed around in our day though they are posed in slightly different language. Sometimes the language is “You don’t know anything about me, so how can you know what is right for me?”
President Benson taught:
“Second, the Book of Mormon exposes the enemies of Christ. It confounds false doctrines and lays down contention. (See 2 Ne. 3:12.) It fortifies the humble followers of Christ against the evil designs, strategies, and doctrines of the devil in our day. The type of apostates in the Book of Mormon are similar to the type we have today.” (President Ezra Taft Benson, “The Book of Mormon is the Word of God”, April 1975 General Conference)
We hear questions echoing those of the Amalekite in Alma 21:6 again among us today, even in the church.