Thank goodness!

thank goodness

An expression of relief. Oh, thank goodness—I thought I'd lost this precious heirloom!
See also: goodness, thank
Farlex Dictionary of Idioms.

Thank goodness!

 and Thank heavens!
Oh, I am so thankful! John: Well, we finally got here. Sorry we're so late. Mother: Thank goodness! We were all so worried. Jane: There was afire on Maple Street, but no one was hurt. Bill: Thank heavens!
See also: thank
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • thank goodness
  • fluff-stuff
  • come to (someone's) aid
  • call around
  • awfully
  • get better
  • have had enough of (someone or something)
  • about
  • up and about
  • to goodness
References in classic literature
"So you do know something then, thank goodness! You're not quite a heathen.