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.

The church was made for mission-God's mission

Yahweh demanded justice for the poor, compassion and equality for foreigners and refugees, systemic redress for poverty, structural mechanisms to protect the homeless and family-less from abuse and destitution, fair and equitable distribution of land, integrity in the judicial system, humility, simplicity and morality in the government (as opposed to wealth, women and weapons), etc. etc. If you want that kind of society, you need to be faithful to the living God.

It is not so much the case that God has a mission for his church in the world, as that God has a church for his mission in the world. Mission was not made for the church; the church was made for mission - God’s mission.

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 whole earth, then, belongs to Jesus. It belongs to him by right of creation, by right of redemption and by right of future inheritance - as Paul affirms in the magnificent cosmic declaration of Colossians 1:15-20. So wherever we go in his name, we are walking on his property. There is not an inch of the planet that does not belong to Christ. Mission then is an authorized activity carried out by tenants on the instructions of the owner of the property.

The issue in the Bible is not just "Do you believe in God or not?" Everybody believed in gods of some sort. The question was, "Who is truly the only living God?" And if that God is indeed Yahweh the God of Israel, then there are consequences in real life - as shown in the Torah.