A covenant is a promise. It is the assurance of what will be. So why did God give two covenants to His people, the “Old and the New?” Dr. John teaches from Hebrews 8 to compare the covenants God has made. The new covenant is not a changing of purpose or a contradiction of the old. The covenant made by Jesus in His blood fulfills and enlarges what God had promised at Sinai. The covenant of Calvary grants the assurance of justice and grace.