'Empty' in the Bible

We have heard about Moab's pride, their great arrogance, their boasting, pride, and excess. But their boastful claims are empty!

The water of the sea will be dried up, and the river will dry up and be empty.

It will be like a hungry man dreaming that he is eating, only to awaken and find that his stomach is empty. It will be like a thirsty man dreaming that he is drinking, only to awaken and find that he is still weak and his thirst unquenched. So it will be for the horde from all the nations that fight against Mount Zion.

Highways are empty, there are no travelers. Treaties are broken, witnesses are despised, human life is treated with disrespect.

Your claim to have a strategy and military strength is just empty talk. In whom are you trusting, that you would dare to rebel against me?

who frustrates the omens of the empty talkers and humiliates the omen readers, who overturns the counsel of the wise men and makes their advice seem foolish,

Those who empty out gold from a purse and weigh out silver on the scale hire a metalsmith, who makes it into a god. They then bow down and worship it.