CCC 692
© Libreria Editrice Vaticana Source: vatican.va
When he proclaims and promises the coming of the Holy Spirit, Jesus calls him the "Paraclete," literally, "he who is called to one's side," advocatus. In 14:16, 26; 15:26; 16:7. "Paraclete" is commonly translated by "consoler," and Jesus is the first consoler. Cf. I Jn 2:1. The Lord also called the Holy Spirit "the Spirit of truth." In 16:13.
Read the full chapter 3. I Believe in the Holy Spirit ¶683–1065