While sharing the Gospel with people, we sometimes find those who say "I will believe in God only if I see Him or hear His voice." Though God is invisible to our eyes, He shows His existence to us through nature, wonders, signs, and miracles, but also through men of faith. Still humans cannot feel or recognize these things because they don't seek God with their hearts. Anyone who opens his heart and pays attention to the word of God can hear His voice and lead a blessed life of meeting and experiencing God by obeying His word.
"For since the creation of the world His invisible attributes, His eternal power and divine nature, have been clearly seen, being understood through what has been made" (Romans 1:20). From Dr. Jaerock Lee's column series 'The Way' carried on the Dong-A Daily