The Bible speaks highly of spiritually-minded people. Romans 8:6 shows the advantage of being spiritually-minded, saying: “Setting the mind on the flesh means death, but setting the mind on the spirit means life and peace.” By focusing on spiritual things, we gain peace with God and with ourselves now and the prospect of everlasting life in the future. However, we live in a dangerous environment. Since fleshly attitudes are all around us, we need to put forth real effort to develop spirituality and to guard it once we have it. If a person loses his spirituality, he creates a moral vacuum and the polluted “air” of this world will rush in. Jude spoke of those who would deteriorate even to the point of “not having spirituality.”​—Jude 18, 19. w18.02 19 ¶5, 7; 20 ¶8