How does God use simple means to accomplish great things?

The sermon emphasizes that God can perform great miracles through seemingly simple acts. At the wedding in Cana, Jesus' instructions to fill the jars with water and the subsequent transformation into wine demonstrate this principle. This account teaches that we should not underestimate the importance of simple obedience and acts of faith. God can take what appears ordinary and, through His divine intervention, turn it into something extraordinary. This principle is applicable in our lives; often, the small, consistent acts of faith can lead to profound spiritual results as God works through them.