The phrase "a powerful declaration of" is correct and usable in written English.
It can be used when emphasizing the strength or significance of a statement or announcement regarding a particular subject or issue.
Example: "The speech was a powerful declaration of the need for social justice and equality for all."
Alternatives: "a strong statement of" or "a compelling assertion of".
In the meantime, the collection was more than "commercial," which was the general opinion leveled at it; it was a powerful declaration of independence and direction.
Though smaller than a conventional blockbuster, this show is a powerful declaration of faith — not just Rembrandt's faith in Jesus, but our own faith in the secular authority of Rembrandt's hand.
In works based on Ralph Ellison's "Invisible Man," the monumental block letters I and M painted over pages from the novel read as a powerful declaration of identity: "I am".
This is a powerful declaration of the soul.
It's a powerful declaration of China's corrupt practices, and it's also Liang's masterpiece.
Wolves Without Teeth, from the new album, sends the stage into a red wash and feels like a Celtic song, a powerful declaration of love, passion and poetry.
Banks were built from luxurious materials in bold architectural forms, with sturdy marble pillars and adornments to provide the most powerful declarations of solidity, tradition and trustworthiness — and to project a sense of enduring history.
Wedding vows are one of the most powerful declarations of love people make in their lifetime.
Talented singer India.Arie, who is heralded for her Grammy-nominated and inspirational songs, chimed in with powerful declarations of her identity, beauty and self-worth.
I call on President Bush to make a powerful and visionary declaration of the possibility of peace in the Middle East and to do everything possible to make that vision a reality.
We took a poll, and the numbers hovered at the brink of an acquittal: 10 to 2. Juror 9's powerful declaration had played a role in killing the drive for a compromise conviction and had won converts.
