“[A]fter Alexander's death in 323 B. C. his general, Ptolemy, replaced him. From then until 30 B. C., when Rome conquered Egypt, a long line of pharaohs from the Ptolemy family ruled the country. The Ptolemys kept their Greek culture, including their language, but they also respected the customs and religious beliefs of the native Egyptians. So it was only natural for the priests' statement to have been carved in both Greek and Egyptian on the Rosetta Stone.” –The Riddle of the Rosetta Stone, James Cross Giblin

According to the passage, what became an important effect of the Greeks respecting the Egyptian culture and religious beliefs?