The Collect of the Day O Lord, who hast taught us that all our doings without charity are nothing worth; Send thy Holy Ghost and pour into our hearts that most excellent gift of charity, the very bond of peace and of all virtues, without which whosoever liveth is counted dead before thee; Grant this for thine only Son Jesus Christ's sake. Amen.
Our recently announced reprint of Anthony Sparrow's commentary on the liturgy discusses the Weeks leading up to Lent, from Septuagesima to Quinquagesima: http://www.anglican.net/works/anthony-sparrow-a-rationale-upon-the-book-of-common-prayer-1684/#p16-2 Having gone to this link just scroll up a few.