The most enigmatic thing concerning the phrase "et in Arcadia ego" is that it contains no verb
(literally it means "and in arcadia I..."). In order to translate it, therefore, a verb must be inserted. The usual one used for this purpose, and the one which Pierre Plantard
implied should be there, is "sum" (I am).
This makes the phrase a double anagram, as with the sum in place it can be re-arranged to Arcam Dei Iesu tango, (I touch the tomb of Jesus the God). Rennes-le-Chateau conspiracy theorists consider this very significant.