Serpent of Moses by Don Hoesel is the 2nd book in the Jack Hawthorne Adventure series.
Moses built and lifted up the brass serpent, healing the afflicted Israelites of snakebites.
King Hezekiah called the serpent Nehushtan. Long thought destroyed, it's been buried for millennia, secreted under the region's shifting sands.
Now the Israeli government wants it back and they will stop at nothing to get their hands on it. Yet they're not the only ones who covet the Nehushtan.
Archaeologist Jack Hawthorne travels to Libya intent on recovering the sacred object, but one does not cross the Mossad and expect to walk away without a fight. Jack and his friends must find the priceless "snake of brass upon a pole" before those who are also hunting it find them...and silence them forever.
Just three years after the recovery of Elisha's bones, Dr. Jack Hawthorne has given up teaching and resumed the practice of archaeology, although his frequent absences have put a strain on his relationship with Esperanza. Things heat up when Esperanza receives a call from an antiquities dealer with troubling news about Jack, and her fears are confirmed. Jack has gone to Libya in search of another biblical artifact: the Nehushtan, the serpent staff of Moses.
After Jack arrives in Libya, he soon discovers he isn't the only one searching for the Nehushtan. Later, in attempting to steal it, he finds himself in the hands of a man who just might be his match. Jack and his friends must stay one step ahead of the Libyan government, an overambitious member of the Vatican hierarchy, and an Egyptian assassin--if they stand any chance of staying alive long enough to recover the staff.