H1891
הָבַל
to become vain
1) to act emptily, become vain, be vain 1a) (Qal) 1a1) to become vain 1a2) to be utterly vain (with cognate acc) 1b) (Hiphil) 1b1) to cause to become vain 1b2) to fill with vain hopes
Full Brown-Driver-Briggs lexicon entry
הָבַל verb denominative act emptily, become vain —
Qal Jer 2:5 = 2Kgs 17:15 they went after vanity וַיֶּהְבָּ֑לוּ and became vain, Ps 62:11 וּבְגָזֵל אַלתֶּֿהְבָּ֑לוּ do not become vain (i.e. be demoralized) by robbery; with cognate accusative Job 27:12 לָמָּה זֶה הֶבֶל תֶּהְבָּ֑לוּ why do ye become vain with vanity (i.e. shew yourselves utterly vain) ? Hiph`il cause to become vain Jer 23:16 (of false prophets) מַהְבִּלִים הֵמָּה אֶתְכֶם i.e. fill you with vain hopes.
2 occurrences
II Kings (1), Jeremiah (1)