CHAPTER 18: "IF SHE COMES UP IT'S BAPTISM"
Harry Potter was on search to find Voldemort's Horcruxes. Dumbledore takes him to get a locket. Eventually during the search, Harry was pulled under the water by corpses that were in fact protecting the locket, they did not want Harry to find the locket and take it from Voldemort. Dumbledore drank the potion in order to get the locket. Dumbledore barley pulled Harry out of the water from the corpses protecting the lock, Dumbledore was weak. Harry comes up from the water and thanks Dumbledore and they get out of there. Harry eventually realizes how significant Dumbledore is to him. He also realizes that Dumbledore is very powerful, just as a Christ figure would be to people getting baptized.