To those who object that according to the words of Amos the Spirit is created, the answer is made that the word is there understood of the wind, which is often created, which cannot be said of the Holy Spirit, since He is eternal, and cannot be dissolved in death, or by an heretical absorption into the Father. But if they pertinaciously contend that this passage was written of the Holy Spirit, St. Ambrose points out that recourse must be had to a spiritual Interpretation, for Christ by His coming established the thunder, that is, the force of the divine utterances, and by Spirit is signified the human soul as also the flesh assumed by Christ. And since this was created by each Person of the Trinity, it is thence argued that the Spirit, Who has before been affirmed to be the Creator of all things, was the Author of the Incarnation of the Lord.