The phrase "a powerful statement that" is correct and usable in written English.
You can use it when introducing a significant or impactful assertion or claim that follows in the text.
Example: "The author makes a powerful statement that challenges the conventional wisdom surrounding climate change."
Alternatives: "an impactful assertion that" or "a strong claim that".
Both Mr. DiSanto and Mr. Hirschorn emphasized that they believe the show is a powerful statement that will inspire other addicts to get clean.
The USADA said in a statement: "Permanently banning these individuals from sport is a powerful statement that protects the current and next generation of athletes from their influence, and preserves the integrity of future competition".
What a powerful statement that would make!
These people are uniquely qualified to make this statement, a powerful statement that is both theologically and politically based).
Size makes a powerful statement that you are "big man".
It was also a powerful statement that the designer wants to rebuild Givenchy couture on the YSL fundamentals of hard and liquid-soft, graphic and vaporous.
It is also the view of Jeh Johnson, the general counsel for the Department of Defense, who gave an eloquent speech at Oxford University on Friday that concluded with a powerful statement on that very issue.
It was a powerful statement, one that somehow both relaxed and energized the players.
In the kind of short, powerful statements that are the stuff of presidential inaugurations, he declared that "education is freedom".
Affirmations are short, powerful statements that build you up and increase your confidence, helping you to expect positive outcomes.[4] Be careful about the words you choose – the things you say about yourself over and over again will ensure that you believe your own rhetoric.
From the British & Irish Lions' perspective, this was a powerful statement of intent that will resonate far beyond the scenic inner suburbs of Sydney.
