Galatians chapter 5 lists the fruit of the Holy Spirit. This is fruit is made manifest in our lives when we are in sync with God. But this list also describes who He is and how He relates to His people. Because God is never out of sync with His own character, this list becomes a good metric to determine whether we are believing a lie about God. It also happens to be a good metric to determine if someone is truly operating in the name of Jesus or by some other authority.