Hebrews Lesson 34 Firma Constitutio Hebrews 8:1-3 Hebrews from the Greek text. In this class Dr. Phillips brings out the fact that this last covenant that God made with man through the blood of His Son is better than all the other covenants because they were just shadows of the real. This covenant is Firma Constitutio,Firma Testamentum, He Kaine Diatheke.