Timeline of the Armstrongist churches

The Armstrongist churches originated from Herbert W. Armstrong’s Worldwide Church of God in the 1930s, emphasizing biblical prophecy and observance of biblical festivals. After Armstrong’s death in 1986, the church experienced splits: some groups shifted away from Armstrong’s teachings, forming different denominations like Grace Communion International, while others retained his doctrines. These movements generally maintain a focus on Old Testament laws, prophetic interpretation, and strict observance of the Sabbath and festivals, but differ in governance and doctrinal emphasis. Overall, the timeline reflects initial unity under Armstrong’s leadership, followed by divergence and formation of various independent groups over doctrinal disagreements and leadership disputes.