'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,