This text is a succinct overview of Christianity, its ancient origins, and its modern-day theology. It includes a brief timeline of the history of ancient Christianity, from the time Jesus was resurrected to the time Nero came to power and persecuted all Christians. Next, it concisely discusses the time from the persecution of ancient Christians to their persecution of Islam during the crusades. Finally, it discusses modern-day Christianity and what it means to be a Christian in America today. Though it is short and succinct, this piece will give the reader a crucial understanding of where Christianity came from, what it currently looks like, and how it could change in the future.