Ambassador for Nicanor. Posidonius was sent with Theodotus and Mattathias by Nicanor to arrange a truce with Judas the Maccabee after having engaged in battle with Judas and realizing that it was better to negotiate a settlement (2 Macc 14:19).
Posidonius
From Tyndale Bible Dictionary, adapted by Mission Mutual. CC BY-SA 4.0.