Textual: Amulek cites scripture, but does not tell us which scripture. He is assuming that his audience will know and supply the citation. Unfortunately for us, we do not have the citation he references. Amulek cites this scripture because he wants to expand on the reason why they cannot procrastinate the day of their repentance. He is telling them that living the gospel is a process of transformation of the heart, and if their hearts are not pure when they stand before the judge, they will not be able at that time to cleanse them to accept the Lord.