Muawiyah knows something the writer of the book of Hebrews did not know:
Hebrews 9:28 So Christ was once offered to bear the sins of many; and unto them that look for him shall he appear the second time without sin unto salvation.
Two comings of Messiah. The second time it won't be to bring salvation, i.e., to die bearing the sins of the world, it will be for judgment.
Two comings of Messiah, with no coming in between.
I'd pretty much have to know what denomination you were representing and which version of what translation you were focusing on this year to figure out everything that you just said.
Since my initial statement referred to a more general case which included Hinduism and it's claims regarding the Messiah, I'd suggest you take it up with your local religious authorities.