S Damien of Molokai: “When the Advocate comes"

... whom I will send you from the Father, the Spirit of truth who proceeds from the Father, he will testify to me.

-- Jn 15:26—16:4a

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," ad-vocatus. "Paraclete" is commonly translated by "consoler," and Jesus is the first consoler. The Lord also called the Holy Spirit "the Spirit of truth."

-- CCC 692