So far, no method has been found to determine when the history of Petra began. Evidence suggests that the city was founded relatively late, though a sanctuary may have existed there since very ancient times. This part of the country was traditionally assigned to the Horites, probably cave-dwellers, the predecessors of the Edomites. The habits of the original natives may have influenced the Nabataean custom of burying the dead and offering worship in half-excavated caves. However, the fact that Petra is mentioned by name in the Old Testament cannot be verified. Although Petra is usually identified with Sela which also means a rock, the Biblical references are not clear. 2 Kings xiv. 7 seems to be more specific. In the parallel passage, however, Sela is understood to mean simply "the rock" (2 Chr. xxv. 12, see LXX). As a result, many authorities doubt whether any town named Sela is mentioned in the Old Testament.