Prayer for the Day

Found this today in the Book of Common Worship for the Twelfth Sunday in Ordinary Time:

Teach us, good Lord,
to serve you as you deserve;
to give and not to count the cost;
to fight and not to heed the wounds;
to toil and not to seek for rest;
to labor and not to ask for any reward,
save that of knowing that we do your will;
through Jesus Christ our Lord. Amen.