A reply of St. Joan of Arc to her judges sums up the faith of the holy doctors and the good sense of the believer: "About Jesus Christ and the Church, I simply know they're just one thing, and we shouldn't complicate the matter." 233
Catechism number 798
The Holy Spirit is "the principle of every vital and truly saving action in each part of the Body."247 He works in many ways to build up the whole Body in charity:248 by God's Word "which is able to build you up";249 by Baptism, through which he forms Christ's Body;250 by the sacraments, which give growth and healing to Christ's members; by "the grace of the apostles, which holds first place among his gifts";251 by the virtues, which make us act according to what is good; finally, by the many special graces (called "charisms"), by which he makes the faithful "fit and ready to undertake various tasks and offices for the renewal and building up of the Church."252
Charisms