Jannes in Wikipedia
Jannes and Jambres, or sometimes Johanai and Mamre, or Iannes
and Mambres, or Janis and Jamberes, are names given to the
magicians who contended with Moses and Aaron and were
discomfited by the Hebrew leaders in the Hebrew Bible Book of
Exodus. These names were not given in the book of Exodus
itself, but they appear in 2 Timothy 3:8 in the New Testament.
Origen says that there was an apocryphal book called The Book
of Jannes and Jambres, containing details of their exploits,
and that St Paul's epistle was quoting from it. This book has
not been rediscovered. Jannes and Jambres are mentioned in the
Old Testament Targum Jonathan Exodus 7:11-8:19.[1]
They also appear in Pliny the Elder's Natural History,
together with Moses, as famous magicians of antiquity; Pliny's
citation is also referred to in Apuleius. Numerius, a
Pythagorean philosopher, calls them sacred Egyptian scribes...
Read More about Jannes in Wikipedia