Common causes for spiritual weakness or lethargy are forgetting the gospel and truth of God and allowing yourself to drift, the trials that God brings, pleasure seeking and sin, neglect of spiritual disciplines. How do we rid ourselves of this numbness and reinvigorate zeal for the Lord? We die to ourselves, letting go of our own selfish desires and comfort in order to serve and love our brothers and sisters and those who are still in darkness, devoted to prayer and hiding his word in our hearts.