I think Jeremiah is for our times. But whether the church in the west will listen to the Word of God today any more than in the chaos of 7th century BC middle east... Only God knows.

As Paul says, even though we as human beings know God, we refuse to acknowledge him. That's what Peter did. He refused even to "know" Jesus! Peter's failure reflects all our failure. It forces us to face the reality about ourselves. But the point of the story is that Jesus foretold this - he knew it was coming. And Jesus forgave Peter, when Peter confessed his love for Jesus. So the story illustrates both the horrible nature of sin, and the amazing reality of grace. That's essential to the whole meaning of the gospel.

I agree that we should regard all books of the Bible as equally inspired - and important. But some come into sharp focus at certain times, as particularly relevant and sharp in what they have to say to our culture at any given moment of history. And Jeremiah is a book for our times.

The Bible itself does not seem too bothered by the idea that talking of God suffering might in any way diminish God, or detract from his perfection. On the contrary, the Bible seems to revel in the richness of describing God in ways that reflect our own human realities.

Only the gospel exposes the cancer of idolatry.

The Jews believed they were the nation God had chosen among all the nations. And they were. But that did not give them immunity to God's judgment. Like the nations, they too would feel God's wrath if they refused to live in God's ways. Furthermore, God could deal with other nations in mercy as well as judgment. Jeremiah was full of surprises, as against the popular religious assumptions of his day. That's perhaps why some people, when they encountered Jesus, thought he was very like Jeremiah. He turned things upside down.

If "gospel" means good news, then Jeremiah had some for sure. He saw the judgment coming, in horrifying technicolour. But he saw beyond it to the redeeming, restoring grace of God, and indeed he speaks of the "new covenant", which takes us to the heart of the gospel in Christ.