to discover how to tap into the light (which is revealed to be a source of electromagnetism) as a means of escaping the island. Their mother later initiated Jacob into becoming her replacement and proclaiming afterwards "Now we're the same". After learning about the Man in Black's plan to leave the Island from Jacob, the mother killed all of the Man in Black's people. In a fit of rage, he killed her. In revenge, Jacob threw his brother into the cavern which emitted the light, an act which he was told by his mother would lead to a fate "worse than death". The Man in Black emerged later as the Smoke Monster and was now trapped on the island. Wanting to escape, he wanted to kill Jacob, but was unable to do so. Due to the machinations of their mother, Jacob and the Man in Black are not able to kill each other. As a result, The Man in Black soon began a long-term plan to manipulate other people who came to the Island into killing Jacob. Aside from making sure the Man in Black stays on the Island, Jacob brings people to the Island to further a philosophical debate that humanity is innately good while the Man in Black echoed their mother's belief that humanity is inherently corrupt, a debate that has raged on for centuries with numerous casualties. Jacob's next chronological appearance was in the sixth-season episode "Ab Aeterno" set in 1857 when Richard Alpert became shipwrecked on the island. The Man in Black quickly manipulated him into attempting to kill Jacob. However, Jacob convinced Alpert to join him and granted him immortality, told him the true nature of the island, and made him his spokesperson. Whenever people crashed on the Island, Richard convinced them to come under Jacob's wing, thus creating the island natives dubbed "The Others". Richard was the leader at first, however it was eventually moved on to others like Charles Widmore, Eloise Hawking and eventually Ben Linus. Over time, Jacob had Richard recruit people from the mainland to become part of his group such as Juliet Burke and Tom Friendly. The leader of the Others would converse with Jacob and pass on his orders to the rest of the Others (who were not allowed to see him). However, when Ben became the leader, Jacob refused to show himself to Ben and Ben had to