'Understand' in the Bible

Behold, I will bring a nation on you from far, house of Israel," says Yahweh. "It is a mighty nation. It is an ancient nation, a nation whose language you don't know, neither understand what they say.

Who is the wise man, that may understand this? and [who is] he to whom the mouth of Yahweh has spoken, that he may declare it? why is the land perished and burned up like a wilderness, so that none passes through?

The anger of Yahweh shall not return, until he has executed, and until he have performed the intents of his heart: in the latter days you shall understand it perfectly.

The fierce anger of Yahweh will not return, until he has executed, and until he has performed the intentions of his heart. In the latter days you will understand it.