Erlo Stegen emphasizes the call to be messengers of Christ, as Jesus was sent by the Father, urging believers to receive the Holy Spirit for guidance and empowerment. He shares a poignant story of a cancer patient who found grace in his suffering, illustrating how those facing death can prepare their hearts for eternity. Stegen highlights the importance of forgiveness and the authority given to believers to forgive sins, reminding us that our lives should be controlled by the Holy Spirit. He encourages the congregation to live in close fellowship with God, allowing His Spirit to lead them in their mission to bring healing and freedom to others. Ultimately, the sermon calls for a life that reflects Christ's love and purpose in a world in need of salvation.