vatican.va/archive/ENG0015/__P67.HTM
III. The Gifts and Fruits of the Holy Spirit
1830 The moral life of Christians is sustained by the gifts of the Holy Spirit. These are permanent dispositions which make man docile in following the promptings of the Holy Spirit.
1831 The seven gifts of the Holy Spirit are wisdom, understanding, counsel, fortitude, knowledge, piety, and fear of the Lord. They belong in their fullness to Christ, Son of David.109 They complete and perfect the virtues of those who receive them. They make the faithful docile in readily obeying divine inspirations.
Let your good spirit lead me on a level path.110
For all who are led by the Spirit of God are sons of God . . . If children, then heirs, heirs of God and fellow heirs with Christ.111
1832 The fruits of the Spirit are perfections that the Holy Spirit forms in us as the first fruits of eternal glory. the tradition of the Church lists twelve of them: "charity, joy, peace, patience, kindness, goodness, generosity, gentleness, faithfulness, modesty, self-control, chastity."112
109 Cf. ⇒ Isa 11:1-2.
110 ⇒ PS 143:10.
111 ⇒ Rom 8:14 ⇒ 17.
112 Gal 5:22-23 (Vulg.).
From the Baltimore Catechism
Q. 700. Why do we receive the gift of Fear of the Lord?
A. We receive the gift of Fear of the Lord (Awe and Wonder of the Lord) to fill us with a dread of sin.
Q. 701. Why do we receive the gift of Piety?
A. We receive the gift of Piety (Reverence) to make us love God as a Father, and obey Him because we love Him.
Q. 702. Why do we receive the gift of Knowledge?
A. We receive the gift of Knowledge to enable us to discover the will of God in all things.
Q. 703. Why do we receive the gift of Fortitude?
A. We receive the gift of Fortitude (Courage) to strengthen us to do the will of God in all things.
Q. 704. Why do we receive the gift of Counsel?
A. We receive the gift of Counsel (Right Judgment) to warn us of the deceits of the devil, and of the dangers to salvation.
Q. 705. How is it clear that the devil could easily deceive us if the Holy Ghost did not aid us?
A. It is clear that the devil could easily deceive us if the Holy Ghost did not aid us, for just as our sins do not deprive us of our knowledge, so the devil’s sin did not deprive him of the great intelligence and power which he possessed as an angel. Moreover, his experience in the world extends over all ages and places, while ours is confined to a few years and to a limited number of places.
Q. 706. Why do we receive the gift of Understanding?
A. We receive the gift of Understanding to enable us to know more clearly the mysteries of faith.
Q. 707. Why do we receive the gift of Wisdom?
A. We receive the gift of Wisdom to give us a relish for the things of God, and to direct our whole life and all our actions to His honor and glory.