Q. 2. What do you mean when you call God a Father? A. 2. He has always been mature, and has never been without the Son nor the Spirit.
Q. 3. But wouldn’t the divine Son then have been the smaller child of the Father? A. 3. No, the Son has always been with the Father and equally mature (John 1:1-18). Thus the Westminster Larger Catechism, Questions and Answers 11 & 36.
Q. 4. Did God the Father and Son then create the Holy Spirit? A. 4. No, for the Father and the Son have always been maturely linked by God the Spirit.