As is clear from the foregoing, all the characteristics of divine generation we have been discussing lead to the conclusion that the Son is consubstantial with the Father. Therefore, by way of summing up all these points, the words, “Consubstantial with the Father,” are subjoined.
St. Thomas Aquinas. (1265-1274). Compendium Theologiae: Conclusion from the Foregoing, trans. by Cyril Vollert. St. Louis & London: B. Herder Book Co., 1947
All scripture is given by inspiration of God and is profitable for doctrine, reproof, correction, and instruction in righteousness (2 Timothy 3:16).