'Knew' in the Bible

And when they lifted up their eyes afar off, and knew him not, they lifted up their voice, and wept; and they rent every one his robe, and sprinkled dust upon their heads toward heaven.

Because he knew no quietness within him, He shall not save aught of that wherein he delighteth.

Oh that I knew where I might find him! That I might come even to his seat!

I was a father to the needy: And the cause of him that I knew not I searched out.

Who is this that hideth counsel without knowledge? Therefore have I uttered that which I understood not, Things too wonderful for me, which I knew not.