'Understand' in the Bible

that beholding they may behold and not see, and hearing they may hear and not understand, lest it may be, they should be converted and they should be forgiven.

And having called again the crowd, he said to them, Hear me, all of you, and understand:

And Jesus knowing it, says to them, Why reason ye because ye have no bread? Do ye not yet perceive nor understand? Have ye your heart yet hardened?

And he said to them, How do ye not yet understand?

But he denied, saying, I know not nor understand what thou sayest. And he went out into the vestibule; and a cock crew.