H1891–הָבַל–ha.val

and reject His statutes and His covenant that He made with their fathers, and His testimonies that He testified against them, and go after the vain thing, and become vain, and after the nations that are round about them, of whom Jehovah commanded them not to do like them;

וַיֶּהְבָּ֔לוּ (יֶּהְבָּ֔לוּ) i.yeh.Ba.lu “they became vain”

Lo, ye -- all of you -- have seen, And why `is' this -- ye are altogether vain?

תֶּהְבָּֽלוּ׃ teh.Ba.lu “do you act in vain”

Trust not in oppression, And in robbery become not vain, Wealth -- when it increaseth -- set not the heart.

תֶּ֫הְבָּ֥לוּ teh.Ba.lu “you put vain hope”

Thus said Jehovah: What -- have your fathers found in Me perversity, That they have gone far off from Me, And go after the vanity, and become vain,

וַיֶּהְבָּֽלוּ׃ (יֶּהְבָּֽלוּ) i.yeh.Ba.lu “they became vain”

Thus said Jehovah of Hosts: Ye do not hearken unto the words Of the prophets who are prophesying to you, They are making you vain things, A vision of their own heart they speak, Not from the mouth of Jehovah.

מַהְבִּלִ֥ים mah.bi.Lim “[are] deluding”