https://minions-of-belial.tumblr.com/post/642739718379995136/an-accused-insurrectionists-posts-show-clearThe etymology of the word is often understood as "lacking worth", from two common words: beli- (בְּלִי "without-") and ya'al ( יָעַל "to be of value").
https://minions-of-belial.tumblr.com/post/642701576962785280/commentary-what-has-sen-ted-cruz-really-done-for""Belial" is applied to ideas, words, and counsel, to calamitous circumstances, and most frequently, to worthless men of the lowest sort, such as men...in general who stir up contention." - Wikipedia: Belial/Hebrew Bible.
A worthless person, a wicked man, goes about with crooked speech, winks with his eyes, signals with his feet, points with his finger, with perverted heart devises evil, continually sowing discord; therefore calamity will come upon him suddenly; in a moment he will be broken beyond healing. - Proverbs 6:12-15 (ESV)