He is best known for his teachings on intercession, spiritual warfare, and national revival, positioning prayer as a tool for reshaping American society according to Christian nationalist principles.
Sheets rose to prominence through his bestselling book Intercessory Prayer and later through An Appeal to Heaven, which helped repopularize an 18th-century flag as a modern symbol of Christian political activism. A vocal advocate of the Seven Mountains Mandate, Sheets teaches that believers must take dominion over society’s key spheres—government, education, media, business, family, religion, and the arts—as part of God's plan for national restoration.
He has organized and led nationwide prayer and prophecy tours across the United States, where participants frequently recite his “Watchman Decree, ” which calls for making the United States into an officially Christian nation. Sheets was heavily involved in mobilizing support for Donald Trump in the lead-up to the January 6, 2021 insurrection, and remains a key voice in the movement seeking to blend Charismatic theology with far-right politics.