Galatians 5:22-23 KJV
But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, Meekness, temperance: against such there is no law.
Take for example, faith. A natural person wouldn't have faith to build an ark, or part the red sea, or destroy the walls of Jericho, etc. To them, such things are impossible and sound crazy. The world today trusts in science. They don't believe miracles can happen.