Where is the term "Hocus pocus" from

Hocus-pocus has been around since the early 17th century. The Oxford English Dictionary tells of a conjurer called Hocus-Pocus who used the phrase as part of a faux-Latin incantation during his act: "Hocus pocus, tontus talontus, vade celeriter jubeo." It's been plausibly suggested that hocus-pocus is a corruption of the genuine Latin words hoc est enim corpus meum, "for this is my body," spoken during the consecration of the Roman Catholic Mass when the wine and wafer are said to be transformed into the body and blood of Christ. Some experts, presumably non-Catholic, think hocus-pocus itself was then corrupted into the word hoax.