Ellen G. White's influence on the Seventh-day Adventist church was profound. As one of the church's co-founders, she provided a significant amount of guidance through her numerous writings, including prophetic visions and theological insights. Her emphasis on health reform, the observance of the Sabbath, and the importance of education helped shape the church’s core beliefs and practices. White's works also inspired missionary work and humanitarian efforts, establishing a global presence for the church. Her leadership and vision continue to impact the lives of many Adventists worldwide today.