What evidence is there to suggest what the creature really means by his threat to be with Frankenstein on his wedding night?

In Chapter 25's text, Victor ruminates over Clerval's death. He'd been threatened prior to that murder as well.

"....... he had murdered Clerval immediately after the enunciation of his threats.

Victor has every reson to believe that the creature will make good on his threats this time as well.

How does this answer the question for Chapter 22?

Chapter 22-

"This letter revived in my memory what I had before forgotten, the threat of the fiend -- "I will be with you on your wedding-night!" Such was my sentence, and on that night would the daemon employ every art to destroy me, and tear me from the glimpse of happiness which promised partly to console my sufferings. On that night he had determined to consummate his crimes by my death. Well, be it so; a deadly struggle would then assuredly take place, in which if he were victorious I should be at peace, and his power over me be at an end. If he were vanquished I should be a free man. Alas! what freedom? such as the peasant enjoys when his family have been massacred before his eyes, his cottage burnt, his lands laid waste, and he is turned adrift, homeless, penniless and alone, but free. Such would be my liberty except that in my Elizabeth I possessed a treasure; alas! balanced by those horrors of remorse and guilt which would pursue me until death."