The language of the Book of Mormon is often unusual yet sublime. Here Abinadi accuses the priests of not applying their hearts to understanding. They had apparently read Isaiah yet still remained condemned because they had done nothing to try to understand his prophecies. Many of us have fallen under the same condemnation. Some of us read Isaiah with little hope of ever understanding its meaning. Some read the book of Revelation with little effort applied to comprehending its message. Even the writings of the plain and precious prophets of the Book of Mormon can be read on a superficial level. To do this is to miss the deeper meanings, to miss the quiet whisper of the Spirit, and to risk falling into hypocrisy like Noah's priests. The scriptures weren't given to us to be read. They were given to us to be searched. The difference is that the searcher has learned to apply his heart to understanding.