Isaiah 11:8 - Clarke's commentary and critical notes on the Bible

And the sucking child shall play on the hole of the asp, and the weaned child shall put his hand on the cockatrice' den. The cockatrice' den - This is supposed, both by the Targum and by Kimchi, to mean the pupil of this serpent's eye. "When," says Kimchi, "he is in the mouth of his den, in an obscure place, then his eyes sparkle exceedingly: the child, seeing this, and supposing it to be a piece of crystal, or precious stone, puts forth his hand to take it. What would be very dangerous at another time, shall be safe in the days of the Messiah; for the serpent will not hurt the child."