'Knowing' in the Bible

And the vision of the whole is to you, As words of the sealed book, That they give unto one knowing books, Saying, 'Read this, we pray thee,' And he hath said, 'I am not able, for it is sealed;'

Woe to those going deep from Jehovah to hide counsel, And whose works have been in darkness. And they say, 'Who is seeing us? And who is knowing us?'

From my knowing that thou art obstinate, And a sinew of iron thy neck, And thy forehead brass,