Which individual published an essay on the Sabbath that attracted early Advent believers?

The correct choice is T. M. Preble, who published an essay on the Sabbath that played a significant role in attracting early Advent believers. Preble's 1845 essay presented arguments for observing the Sabbath on the seventh day, aligning with the biblical account of creation and the Fourth Commandment. His work brought renewed focus to the significance of the Sabbath, which resonated with those seeking a deeper understanding of biblical teachings during the early formation of the Adventist movement. This essay was influential in encouraging individuals to reconsider their practices regarding the Sabbath, contributing to the theological foundations of the Seventh-day Adventist Church.

Through the clarity of his writing and the biblical evidence he provided, Preble helped to spark interest among early Adventists, effectively catalyzing discussions and further explorations into the topic of Sabbath observance. This laid the groundwork for a more organized movement centered around the belief in keeping the Sabbath, which became one of the hallmarks of Seventh-day Adventist theology.