She sacrificed honesty 'on the altar of success'. [=she chose to be dishonest in order to achieve success]
They started a romance that eventually 'led' (them) 'to the altar'.
Her fiancé 'left her at the altar'.
(..) - - And so, by the power vested in me, - - The whole town's in there. - - They're at the altar. - . - Mother Fletcher! He already said it. - Oh, for the love of Pete! - I object! (..)2001 Shrek