Biblical Text: Jeremiah 31:31-34
The text is Jeremiah’s invoking of a new covenant. The sermon attempts to think about what we are talking about when we say the word covenant. What a covenant is is the Hebrew answer to the question: “How does God interact with man?” There are a bunch of other answer to that question. The sermon starts out cataloging some of them and how they came about. But the Hebrew answer is unique. And the Christian answer is the Hebrew answer.
The trouble that Jeremiah is experiencing is similar I think to what we might be experiencing today. Just how good does the answer of the covenant fit with how we experience God? A big part of the word covenant is simply a way that God binds himself. If the covenants appear to be failing, as they could appear to Jeremiah, in what way is the God who bound himself actually God? Jeremiah’s prophecy is “the new covenant”, not a breaking of the old ones, but their fulfillment. And that fulfillment is in Jesus Christ. Christ has always been the fulfillment, but in the new covenant we have the greater revelation written on our hearts. It is no longer blood on the external posts and lintels, but blood taken in. The fulfillment is no longer an external obedience, but the obedience of the heart through faith.