τις 5101 I-NSF δε 1161 CONJ συμφωνησις 4857 N-NSF χριστω 5547 N-DSM προς 4314 PREP {VAR1: βελιαρ 955 N-PRI } {VAR2: βελιαλ 955 N-PRI } η 2228 PRT τις 5101 I-NSF μερις 3310 N-NSF πιστω 4103 A-DSM μετα 3326 PREP απιστου 571 A-GSM
Vincent's NT Word Studies
15. Concord (sumfwnhsiv). Only here in the New Testament. From sun together, fwnh voice. Primarily of the concord of sounds. So the kindred sufwnia, A.V., music, see on Luke xv. 25. Compare sumfwnov with consent, 1 Cor. vii. 5; and sumfwnew to agree, Matt. xviii. 19; Luke v. 36, etc.Belial (beliar). Beliar. Belial is a transcript of the Hebrew, meaning worthlessness or wickedness. The Septuagint renders it variously by transgressor, impious, foolish, pest. It does not occur in the Septuagint as a proper name. The form Beliar, which is preferred by critics, is mostly ascribed to the Syriac pronunciation of Belial, the change of l into r being quite common. Others, however, derive from Belyar, Lord of the forest. Here a synonym for Satan. Stanley remarks that our associations with the word are colored by the attributes ascribed to Belial by Milton ("Paradise Lost," B. 2.), who uses the word for sensual profligacy.
Robertson's NT Word Studies
6:15 {Concord} (sumfwnesis). Symphony. Late word from sumfwnew, only here and ecclesiastical writers, though sumfwnema in the papyri. {Belial} (belial). Transliteration of Hebrew word for worthlessness and applied to Satan (_Book of Jubilees_ 1.20) as here. Paul graphically sums up the contrast between Christ and Belial (Satan), the heads of the contending forces of good and evil. {Portion} (meris). The fourth of the words. Here by "unbeliever" (apistou) Paul means "disbeliever," not just an unconverted man who yet approves Christ.