Col 1:24 Who now rejoice in my sufferings for you, and fill up that which is behind of the afflictions of Christ in my flesh for his body’s sake, which is the church.
Rule of Benedict, chapter LXXII On the Good Zeal Which They Ought to Have (6th century)
Just as there is an evil zeal of bitterness which separates from God and leads to hell, so, there is a good zeal which separates from vices and leads to God and to life everlasting.This zeal, therefore, the sisters should practice with the most fervent love. Thus, they should anticipate one another in honor (Rom. 12:10); most patiently endure one another’s infirmities, whether of body or of character; vie in paying obedience one to another — no one following what she considers useful for herself, but rather what benefits another — ; tender the charity of sisterhood chastely; fear God in love; love their Abbess with a sincere and humble charity; prefer nothing whatever to Christ. And may He bring us all together to life everlasting!