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'.
(..) What was she wearing last? - Can't believe this. - Do you even remember what... - Riley. - Hey. There you are. - Thank goodness. - Oh, we were worried sick. - Where have you been? It's so late. - Oh. Riley, what happened? Are you alright. (..)2015 Inside Out
(..) Sorry I don't speak moron as well as you. But let me try. Duh. Awwww! Oh. Thank goodness you're back. - Things are really messed up. - We-we-we found this idea. Oh no. Joy, you got to fix this. Get out there. (..)2015 Inside Out