Int. Standard Bible Encyclopedia EPHAI 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 (Jeremiah 40 Jeremiah 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).

Multi-Version Concordance Ephai (1 Occurrence) Jeremiah 40:8 then they came to Gedaliah to Mizpah, to wit, Ishmael the son of Nethaniah, and Johanan and Jonathan the sons of Kareah, and Seraiah the son of Tanhumeth, and the sons of Ephai the Netophathite, and Jezaniah the son of the Maacathite, they and their men. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)