wonders will never cease

US /ˈwʌn.dərz wɪl ˈnɛv.ər siːs/
UK /ˈwʌn.dərz wɪl ˈnɛv.ər siːs/
"wonders will never cease" picture
1.

used to express surprise, often with a hint of sarcasm, at something unexpected or unusual happening

:
He actually cleaned his room for once. Well, wonders will never cease!
You actually finished your homework on time? Wonders will never cease!