Under the new covenant, Jesus has provided a better way for us to exercise our faith. All we have to do is believe and speak. In 2 Corinthians 4:13, Paul is saying that speaking is putting action to our faith. Jesus made grace available and we are to believe in His finished work and access grace by confessing our faith. In Mattew 17:20, Jesus said the same principle will move mountains. Mountains are obstacles, issues, problems, challenges or anything that opposes God’s will for our lives. The Red Sea, Goliath, Jericho’s walls and warriors were mountains that needed removed.