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.

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 finished" means that Jesus had accomplished all that God's mission had sent him to do. It did not merely mean that his life was over like, "I'm finished". It was a statement of achievement of purpose - God's purpose to deal with sin and guilt, to defeat all the powers of evil, to bring about the reconciliation of enemies, to defeat death itself, and to accomplish the reconciliation and liberation of the whole creation.

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.

What is so striking in the book of Jeremiah is how many times it is impossible to distinguish between the words of Jeremiah and the words of God, when deep feelings are being expressed. That is probably intentional. The prophet not only speaks what God says, he also feels what God feels. The tears of the prophet are the tears of God.

Old Testament Israel had some foundational pillars of faith. They were true and robust and God given. The trouble was that people had come to trust in them merely by repeating them, without paying any attention to the ethical implications of what their faith should mean in how they lived. They believed God had given them their land. He had. But they had not lived in it in either gratitude or obedience. They had not fulfilled any of the conditions that Deuteronomy had made so clear.

The trouble today is that many Christians live in a kind of bubble of assumptions about what their Christianity means, especially if it places them comfortably among "the good guys," - assumptions that are likely to be drawn as much from folk-Christianity, surrounding political culture, popular pulp-books about the "End Times," or their favourite guru writer or therapist, than from sober and comprehensive reading of the Bible as a whole. Prophets and preachers have the unwelcome task of pricking that bubble with the sharpness of actual texts and teachings of the Bible itself.