Some Christian prophets like to announce the judgments of God on peoples and nations, but this is a misunderstanding of their role.
The common view that the Old Testament prophets announced God’s judgment on the children of Israel, or the surrounding nations is not quite right. The Hebrew word for “judgment” is mishpat. It means a judicial judgment or verdict. It is never used to describe the message of the Old Testament prophecies.
The Old Testament prophets only rarely used this word to describe the message they were proclaiming. They spoke frequently about the failure of kings and judges to give wise judgment (mishpat) (Isaiah 42:3 and Jer 21:9 are examples), and they spoke of God’s verdict (mishpat) on Israel’s behaviour, but they never referred to the events they were announcing as God’s judgments.
The prophets were actually warning of the consequences of rejecting God and his law. The law provided Israel with protection from the spiritual powers of evil. When they rejected God and stopped applying his law, they lost their spiritual protection. This enabled the spiritual powers of evil to attack them and wreak havoc on their land. God’s verdict on Israel’s behaviour gave the evil powers authority to act and bring harm to the nation.
The Mosaic law provided the Israelites with spiritual protection. Obeying the law kept them separate from people and things carrying evil spirits. The tabernacle sacrifices provided further protection. When the people rejected the law, they lost that protection and the spiritual powers of evil were able to work their harm and make the land desolate. The role of the OT prophets was to announce the consequences of rejecting God and the spiritual protection that his law provided.
God was not the initiator of the troubles released by the rebellion of the children of Israel. They were inflicted by the spiritual powers of evil. They gained the power to do this, because the people had squeezed God out of the land so he could not protect them. The people cut themselves off from the protection that God provided through the law.
The troubles announced by the prophets were initiated by the spiritual powers of evil when they had gained a free hand in the land. The prophets did not understand the operation of these spiritual powers, so they often described the coming troubles as if God was responsible for them. He seemed to be happy taking responsibility for these events, because he created the situation where they could occur.
In the modern world, God loves the people of the world, even when they have rejected him. He does not want to harm them, even if they deserve it. His desire is to rescue them and protect them from the spiritual powers of evil, but many choose not to be rescued by him, partly because they do not realise it is possible. Because he loves them, he does not use his prophets to pronounce curses or judgments against them. He loves the people of the world and wants their friendship.
Because they have rejected God, the people of the world are vulnerable to attack by the spiritual powers of evil. These attacks are the consequence of their rejection of his love and the protection that he could provide. God knows what the spiritual powers of evil are planning to do, so he can use his prophets to warn his people of the harm they are planning.
God does not use his prophets to announce his judgment on the people of the world, because that would nullify the message that he loves them. The message of the prophets should be the message of Jesus.
God loved the world so much that he sent his son so it would not perish (John 3:16).
God may use his prophets to warn the people of what the spiritual powers of evil will be able to do because he has not been able to rescue them. He does this in the hope that they would turn to him for help so he can rescue them from what the spiritual powers of evil plan to do.
God has not made a similar covenant with the nations, so the consequences of disobedience described in Deuteronomy 28 do not apply to them. However, the people of the world are engaged in the same spiritual battle as the children of Israel. The spiritual powers of evil are not very creative, so they used the same methods to attack them as they used against the children of Israel. If the people of nations do not have the spiritual protection provided by the cross, they will vulnerable to evil, just like Israelites when they rejected the law. They can expect the same types of troubles and plagues as the OT prophets announced for Israel.
Christian prophets may sometimes need to warn the people of the world of the consequence of rejecting God’s offer to rescue them. However, they must not say that God is judging them or that he is initiating the events that they are prophesying. The prophets must explain that dark events are the works of the spiritual powers of evil. They should declare that God still loves them and wants to rescue them from the trouble that is coming.
The Old Testament prophets were sometimes blunt because they did not have the fullness of the Spirit that we have. God was not reaching out to the nations in their season, so it did not matter too much, but in the new covenant age, excessive bluntness and condemnation is an obstacle to a gospel of God’s love.