You are safe and sound in Him, your Savior, Christ Jesus. Do what you are given to do in that confidence. He is the One who has made you and given you life. He is the One who has called you; and He is faithful. He has put you in your place of service.
What you do in His Name, that is to say, as a Christian, in faith, is not pointless or meaningless or in vain. However much or little you may seem to accomplish, and whether you receive thanks or suffer persecution, your life is a witness of Christ the Crucified. - Rev. Rick Stuckwisch
(rest of the sermon here)