The word 'testament' is used, but the deeper meaning points to a covenant. What's the difference, and why does it matter for inheritance?
The Greek word translated as 'testament' here (diatheke) actually carries a dual meaning: it can refer to a 'will' or a 'covenant.' While Christ's death certainly functions like a will, bequeathing an inheritance, its primary significance in this context is as a covenant.
A Covenant Requires a Mediator
A covenant is a solemn agreement between parties. In this case, it's an agreement between God and humanity. Because of human sin, a mediator was needed to bridge the gap and ensure the terms were met. Christ, as the Mediator, perfectly fulfills this role.
The Inheritance: A Promised Gift
This new covenant, established by Christ's death, has a specific purpose: so that those 'who are called' (those God invites and empowers to come to Him) might receive the 'promised eternal inheritance.' This inheritance isn't something earned through works but is a gift received by faith, made possible because the covenant was ratified by Christ's death and resurrection.