Worthlessness, frequently used in the Old Testament as a proper name. It is first used in Deut. 13:13. In the New Testament it is found only in 2 Cor. 6:15, where it is used as a name of Satan, the personification of all that is evil. It is translated “wicked” in Deut. 15:9; Ps. 41:8 (R.V. marg.); 101:3; Prov. 6:12, etc. The expression “son” or “man of Belial” means simply a worthless, lawless person (Judg. 19:22; 20:13; 1 Sam. 1:16; 2:12).
Belial
2 verses
Deuteronomy
Deuteronomy 13:13
Certain men, the children of Belial, are gone out from among you, and have withdrawn the inhabitants of their city, saying, Let us go and serve other gods, which ye have not known;
2 Corinthians
2 Corinthians 6:15
And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?
From Easton's Bible Dictionary
Matthew George Easton, 1897