'Thoughts' in the Bible

O Jerusalem, wash thine heart from wickedness, that thou mayest be saved. How long shall thy vain thoughts lodge within thee?

Hear, O earth: behold, I will bring evil upon this people, even the fruit of their thoughts, because they have not hearkened unto my words, nor to my law, but rejected it.

The anger of the LORD shall not return, until he have executed, and till he have performed the thoughts of his heart: in the latter days ye shall consider it perfectly.

For I know the thoughts that I think toward you, saith the LORD, thoughts of peace, and not of evil, to give you an expected end.