Sweet Lord Jesu Christ, I thank thee and yield thee grace for that great fearfulness that thou hadst for our sakes, when thou became so full of anguish that an angel of heaven came to comfort thee, when thou sweatest blood for anguish.

I pray thee, Lord, and beseech thee, for thy sweet memory, that thou be mine help in all mine anguish and my temptations, and send me, Lord, the angel of counsel and of comfort in all my needs, that I may turn, through that sweat, out of all sickness of soul and body into life and health.

Richard Rolle's Meditation on the Passion
13th Century