Who said "You're dealing with something that's far beyond you."?

This quote is attributed to Agatha Harkness.

You're dealing with something that's far beyond you. - Agatha Harkness

"You're dealing with something that's far beyond you."

Agatha Harkness Strength

"Well, hello, dearie."

"The real question is, what are you willing to do to keep what you love?"

"Power isn't given, it's taken."

"I'm not a witch. Well, not a traditional one anyway."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."