When it comes to our need for the fruit of the Spirit to be evident in our lives and influencing our hearts, we need the whole package of God's armor. For there is a foe who wants to sow seeds of hatred, misery, discord, agitation, and harsh bitterness. And he seeks to steal, kill, and destroy. He wants to take us down. To remove the joy, undercut the peace, destroy the love, incite rebellion, and bring death.
That's one reason holding onto the fruit of the Spirit is so challenging. Not only do we lose sight of it on our own, but the world challenges this place of pure and joyous faith, and the devil is firing his darts at us left and right. We need God's armor to keep the gift the Holy Spirit gives.