The Gospel of Mark testifies that Jesus Christ is the Son of God and God Himself. And it also testifies that He is our Savior. So we can see the writer of the Gospel of Mark bearing witness of Jesus forcefully, testifying that He is God Himself and our Savior. That's why I would like to bear witness of this Jesus Christ manifested in the Gospel of Mark as much as possible, based on the gospel of the water and the Spirit. What is obvious is that the core Truth of Christianity is found in the gospel of the water and the Spirit. Jesus said to Nicodemus, "Most assuredly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God" (John 3:5).