Βελίαλ, ὁ, indecl. (Heb. בְּלִיַּעַל, worthlessness, but see DB, i, 268),
Belial, a name of Satan: 2Co.6:15, Rec. See next word.†
Βελιάρ, ὁ, indecl. (another form of previous word, "due to harsh Syriac pronunciation," or else Heb. בֵּל יַעַר, lord of the forest),
Beliar, a name of Satan: 2Co.6:15 (see DB, i, 269).†
(From Abbott-Smith. LSJ has no entry)