552. apeiros -- without experience of
... [In classical Greek, 552 () refers to people (knowledge) -- and hence due to
their lack of (practice).]. Word Origin from alpha (as a neg. ...
/greek/552.htm - 7k

50. agnoeo -- to be ignorant, not to know
... to be ignorant, not to know NASB Word Usage have no knowledge (1), ignorance (1 ... a
(as a negative particle) and noieo; not to know (through lack of information ...
/greek/50.htm - 7k

1820. exaporeo -- to be utterly at a loss, be in despair
... passageway") -- properly, without passage (no way out); (figuratively) to lack adequate
resources ... right in itself, but from fear of the knowledge and opinion ...
/greek/1820.htm - 8k

Hosea 4:6
My people are destroyed for lack of knowledge: because you have rejected knowledge, I will also reject you, that you shall be no priest to me: seeing you have forgotten the law of your God, I will also forget your children.
Topicalbible.org—AKJV

John 8:32
And you shall know the truth, and the truth shall make you free.
Topicalbible.org—AKJV