The phrase "knowledge were" is not grammatically correct.
The phrase "knowledge was" is the correct form. For example: His vast knowledge was invaluable in completing the project.
Jobs requiring specialized technical knowledge were restricted to whites.
If knowledge were power, the only thing he'd be running is a fever.
But he said that none of the death certificates, to his knowledge, were changed.
The details of her knowledge were important; her mental illness at the time was not.
He said most of the projects, to his knowledge, were adequately financed through completion.
We had to satisfy ourselves that no specialist tools or knowledge were needed.
His zest for life and never-ending quest for knowledge were evident to all who knew him.
Evelyn's passion and knowledge were unmatched, and we at Arkay will miss her inspiration and dedication.
Here, in a world new in comparison, not even the categories of knowledge were fully established.
If knowledge were the issue, then ethics would be a kind of talent.
Sustained changes in knowledge were found.
