Syene in Fausset's Bible Dictionary

Properly Seveneh or Sebennytus in the eastern delta (the Heracleopolis of Manetho, called from Hercules the "local god"), meaning "a key or opening", a Syene Egyptian town. "From Migdol to Syene," i.e. from the fortress near Pelusium on the N. of Suez to Syene in the far S. toward Ethiopia (Ezekiel 29:10; Ezekiel 30:6); not as KJV "from the tower of Syene." The shepherd kings had Syene for their chief city, from whence they are called Sebennyte Pharaohs.