'Ignorance' in the Bible

"Now, brothers, I know that you did this in ignorance, as did also your rulers.

For as I passed along, and observed the objects of your worship, I found also an altar with this inscription: 'TO AN UNKNOWN GOD.' What therefore you worship in ignorance, this I announce to you.

The times of ignorance therefore God overlooked. But now he commands that all people everywhere should repent,

being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their hearts;

as children of obedience, not conforming yourselves according to your former lusts as in your ignorance,

For this is the will of God, that by well-doing you should put to silence the ignorance of foolish men: