'Understand' in the Bible

Then I thought:They are just the poor;they have played the fool.For they don’t understand the way of the Lord,the justice of their God.

I am about to bring a nationfrom far away against you,house of Israel.This is the Lord’s declaration.It is an established nation,an ancient nation,a nation whose language you do not knowand whose speech you do not understand.

Who is the man wise enough to understand this? Who has the Lord spoken to, that he may explain it? Why is the land destroyed and scorched like a wilderness, so no one can pass through?

The heart is more deceitful than anything else,and incurable—who can understand it?

The Lord’s anger will not turn backuntil He has completely fulfilled the purposes of His heart.In time to come you will understand it clearly.

The Lord’s burning anger will not turn backuntil He has completely fulfilled the purposes of His heart.In time to come you will understand it.