Chapter 3 — Part I — Article I (Of God the Father)
Section 91. Q. How does holy Scripture speak of the Blessed Trinity? A. The chief texts on this point in the New Testament are the following: Go ye therefore and teach all nations, baptizing them, in the name of the Father, and of the Son, and of the Holy Ghost. Matt. xxviii. 19. There are three that bear record in heaven--the Father, the Word, and the Holy Ghost; and these three are one. 1 John v. 7.