The Psalms ch 25,29, 33, 36,39
Over and over, the psalmist, most likely David, had meditated upon the character of God towards mankind. God is powerful yet kind and merciful. He is the voice that men need to hear for them to alter their lives and their hearts.
Look at creation and marvel. What do we see? A waterfall is beautiful but powerful. No one can alter its free fall. Look at the storms that come our way. No one can stop them or their power. Yet, the voice of God can alter the hardest of hearts and change them for good. The psalmist stands in awe of the power of His voice.
Do I stop and listen to His voice so He can present Himself to me so that I might hear and respond?