English Standard Version
They know not, nor do they discern, for he has shut their eyes, so that they cannot see, and their hearts, so that they cannot understand.New International Version
They know nothing, they understand nothing; their eyes are plastered over so they cannot see, and their minds closed so they cannot understand.Catholic Public Domain Version
They have neither known nor understood. For their eyes are obscured, lest they see with their eyes and understand with their heart