The Holy Spirit's Word

Cum per Moysen ac David et Esaiam vel alios prophetas specialiter spiritus sanctus locutus esse referatur, Deum locutum vox divina profitetur, sicut in Pentateuchi volumine frequentatur: locutus est inquit, Dominus ad Moysen dicens, sollicitius requiramus, si specialiter spiritus sanctus in prophetis loquatur. Habemus, ut praefati summus, in actibus apostolorum Paulo arguente Iudaeos: bene, inquit, spiritus sanctus per Esaiam locutus est ad patres nostros: auditu audietis et non intellegetis, in eadem lectione: viri fratres, oportet impleri scripturam, quam praedixit spiritus sanctus per os David. Et in epistola Petri legimus: non enim voluntate humana allata est aliquando prophetia, sed spiritu sancto loctui sunt sancti Dei homines. Agnoscamus propheticam gratiam evidenter ad potentiam sancti spiritus pertinere, et de psalmo David ita ad Hebraeos legimus: quapropter sicut dicit Spiritus sanctus: Hodie si vocem eius audieritis et cetera. Et hic apertissime per David spiritum sanctum locutum esse testatur. Sanctus Faustus Reiensis, De Spiritu Sancto Liber II, Cap VII Source: here

When through Moses and David and Isaiah, or the other prophets, it is said the Holy Spirit had spoken, the Divine voice announces that God has spoken, as in the books of the Pentateuch it is frequently said: 'The Lord said to Moses,' and so we should more carefully inquire if the Holy Spirit especially spoke among the prophets. We have, as we have said before, in the Acts of the Apostles, Paul disputing with the Jews, and saying, 'Well did the Holy Spirit speak through Isaiah to our fathers: you hear and you do not understand.' 1 In the same book: 'Men and brothers, it is necessary that Scripture be fulfilled, what the Holy Spirit foretold through the mouth of David.' 2 And in a letter of Peter we read: 'For not by the human will is prophecy ever uttered, but by the Holy Spirit holy men have spoken of God.' 3 Let us acknowledge, then, that prophetic grace pertains overtly to the the power of the Holy Spirit, and in a Psalm of David in the letter of Hebrews we read: 'whence as the Holy Spirit says: Today if you should hear His voice, etc.' 4 And here it is most evidently witnessed that the Holy Spirit spoke through David. Saint Faustus of Riez, On The Holy Spirit, Book 2 1 Acts 28.25 2 Acts 1.16 3 2 Pet 1.21 4 Heb 3.7, Ps 94.8