Chapter 37 — Part IV: Prayer — The Third Petition: Thy Will Be Done on Earth as It Is in Heaven
Section 15. "Thy Will" — Though the faithful are not to be left in ignorance of the import of this Petition, yet in this connection many questions concerning the will of God may be passed over which are discussed at great length and with much utility by scholastic doctors. Accordingly we shall content ourselves with saying that by the will of God is here meant that will which is commonly called the will of sign; that is to say, whatever God has commanded or counselled us to do or to avoid.