16 For where there is a 1testament, the death of him who made the testament must of necessity be established.
161 In Greek the same word is used for both covenant and testament. A covenant is an agreement containing some promises to accomplish certain things for the covenanted people, while a testament is a will containing certain accomplished things that are bequeathed to the inheritor. The new covenant consummated with the blood of Christ is not merely a covenant but a testament in which all the things that were accomplished by the death of Christ have been bequeathed to us. First, God gave the promise that He would make a new covenant (Jer. 31:31-34). Then Christ shed His blood to enact the covenant (Luke 22:20). Since accomplished facts are promised in this covenant, it is also a testament. This testament, this will, was confirmed and validated by Christ's death and is being executed and enforced by Christ in His resurrection. The promise of God's covenant is insured by God's faithfulness; God's covenant is guaranteed by God's righteousness; and the testament is enforced by Christ's resurrection power.