This illustration shows us that you may receive teaching from many different people in all shapes and sizes, but you must make sure it is the Truth! The message of the Word of God is what matters, not who delivers that message to you. However it is up to you to make sure that whoever you are listening too, is telling you the Truth. That is why you should study the Bible yourself, so you will know they are teaching you the Truth. The message matters, not the messenger.