She agreed to help him 'out of the goodness of her heart'. [=because she is a kind and generous person]
He finally got a raise. 'Goodness knows' he deserved one. [=he certainly deserved one]
If you cook the vegetables too long, they'll lose all their (natural) 'goodness'.
(..) Get down on the ground, now! - Stop. - Get down on the ground, now! It's not my fault. Stop. Please... My goodness. They see me...they see me... They see me...they see me.. On the ground, now! No...stop. Don't do that. Please. (..)2014 The Amazing Spider-Man 2