Chapter 37 — Part IV: Prayer — The Third Petition: Thy Will Be Done on Earth as It Is in Heaven
Section 16. Hence, under the word will are here comprised all things that have been proposed to us as a means of securing the happiness of heaven, whether they regard faith or whether they regard morals, all, in a word, that Christ the Lord has commanded or forbidden either directly or through His Church. It is of this will that the Apostle thus writes: Become not unwise, but understand what is the will of God.