This document discusses the dangers of not hearing and responding to God's voice. It identifies three main hazards: 1) God will become angered as he was with Israel in the wilderness. 2) Our hearts will become hardened to God's message the more we ignore and disobey him. Sin deceives us and makes our hearts less receptive to God. 3) We will run out of time to respond to God, as the opportunity to accept his message is only available "today" and not after we die. The document urges readers to listen to God's voice and not harden their hearts so as to avoid these dangers.