'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 mantle, and sprinkled dust upon their heads toward heaven.

Then all his brothers and sisters and all those who knew him before arrived. They ate food with him in his house, mourned for him, and consoled him for all the trouble that the LORD had brought and placed on him. Some gave him gold bullion and some brought gold earrings.

Who is he that hideth counsel without knowledge? therefore have I uttered that I understood not; things too wonderful for me, which I knew not.

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

I was a father to the poor: and the cause which I knew not I searched out.

Because he knew no rest in his craving, he shall save nought of what he most desired.