O Lord, Rekindle and Strengthen Faith

A Lutheran prayer before receiving communion:

My Lord Christ, I have fallen, I would be gladly strong. For this purpose you have instituted the sacrament, that with it we may rekindle and strengthen our faith and be helped. Therefore I am to receive it. Behold, Lord, it is your word. My weakness and failings are known to you. You, yourself, have said: "Come to me, all you who are weary and are carrying heavy burdens and I will give you rest" (Matt. 11:18). I now come to be helped. Amen. 

—Martin Luther, Luther's Prayers (ed. Herbert F. Brokering; Augsberg: Minneapolis, 1994), 76.