this is an excerpt from an article on nerdcoremovement.com:
ERROL WANTED TO BE KILLED
For all the dead bodies and bones found at the house that Errol occupied with his half sister, the only two that were discovered came in 1995 and 2012 and both were Errol’s attempts at being found so his ‘work’ could lead him to the ascension. As he states when talking to his sister that it’s been weeks since his last work was witnessed, he’s waiting on the cops to finally be worthy enough to discover his trail.
While Rust is walking through the catacombs hunting for Errol, he calls him ‘little priest’ and says that he ‘blessed’ Reggie and DeWall while referring to them as acolytes (a person who assists in a religious experience). Obviously, Rust was involved in Reggie and DeWall’s deaths so this was the ascension that Errol spoke about, and now he’s hoping to follow their same path and escape from this plane.
Creator Nic Pizzolatto also confirmed as much when speaking to EW.com
"In the beginning, when he says, 'My ascension removes me the disc in the loop,' he’s describing the cosmology of eternal recurrence of various characters, including Cohle and Reggie Ledoux hit upon, and he’s hitting upon his personal mythology. When he says, 'It’s been weeks since I left my mark, would they have eyes to see,' we can tell from that that he’s angling for a reckoning, for a showdown. He’s waiting for it. He believes the murders ritually enacted over a period of time, upon his death, permit him an ascension that removes him from the Karmic wheel of rebirth."
It also stands the reason that’s why Errol attacked Cohle and Hart because they had to kill him so he could ascend off this plane. He couldn’t be captured, he had to be killed.