Ephai
Smith's Dictionary
(gloomy), a Netophathite, whose sons were among the “captains of the forces” left in Judah after the deportation to Babylon. (Jeremiah 40:8; 41:3) comp. Jere 40:13 (B.C. 588.)
International Standard Bible Encyclopedia
e'-fi, e'-fa-i (`ephay, in Qere, `ophai, in Kethibh; Iophe, Ophe, "gloomy," "obscuring," in the Septuagint, Septuagint):
"The Netophathite," whose sons were numbered among "the captains of the forces" left in Judah after the carrying away to Babylon (Jer 40 Jer 47). His sons assembled at Mizpah with Gedaliah, governor of the scattered Jews, and with him were slain by Ishmael, the son of Nethaniah (Jet 41:3).