The Bible is the inspired written record of God's communication to man. It details the ways which God spoke to man and the response of individuals and nations to the voice of God. The Bible often repeats the phrase ". . . and the Lord said" and incidents where He spoke to man. This confirms that God communicates with men and women. The Bible verifies that believers can know the voice of God and we need to know that God has something important to say to mankind. The phrase "today, if you will hear His voice," confirms that God still speaks to men in present times just as He did in times past.