Christian Nationalism

From ReformedWiki.org, the wiki for Reformed Christianity
A placard with Jesus wearing a MAGA hat at the January 6th attacks on the US Capitol

Christian Nationalism is a heresy which conflates the message of the gospel with the political and cultural identity of a specific nation, asserting that a nation’s identity, laws, and government should be explicitly shaped by Christian principles or that a particular nation holds a special, divine status in God’s plan. This ideology distorts the universal nature of the Christian faith, which transcends national boundaries, and improperly elevates national identity to a level of theological importance. Christian Nationalism often seeks to merge faith with political power, which undermines the gospel’s call for believers to seek first the Kingdom of God rather than earthly kingdoms. It also risks promoting division, exclusivity, and the potential for idolatry, as it places national loyalty and culture above the teachings of Christ and the unity of the global Church.

It bares a resemblance to Islamism, a similar movement within the religion of Islam.