Lucifer tells his mother that he has all of the pieces of the spear and that she should leave Chloe alone when Hector Ruiz arrives and points his gun at them. When time is frozen by Amenadiel, Lucifer uses the spear to cut a hole into an empty universe for his mother in episode 2x18 "The Good, the Bad, and the Crispy". Chloe and Lucifer investigate the body of Sam left posed under the pier in episode 3x01 "They're Back, Aren't They?".
Lilly's birthday party