CCC 708

This divine pedagogy appears especially in the gift of the Law. Cf. Ex 19- 20; Deut 1-11; 29-30. God gave the letter of the Law as a "pedagogue" to lead his people towards Christ. Gal 3:24. But the Law's powerlessness to save man deprived of the divine "likeness," along with the growing awareness of sin that it imparts, Cf. Rom 3:20. enkindles a desire for the Holy Spirit. the lamentations of the Psalms bear witness to this.

Read the full chapter 3. I Believe in the Holy Spirit ¶683–1065