The phrase "declared himself as" is grammatically correct and can be used in written English.
It typically means that someone has officially or publicly stated or announced their identity, beliefs, or intentions. Example: The athlete declared himself as a strong advocate for mental health awareness during the press conference.
Despite the size of those challenges, he declared himself "as hopeful as ever" that the nation will thrive.
Barton declared himself "as committed to Glasgow Rangers as the day I signed", but also implied criticism of the way Warburton had handled the situation and cast doubt on his desire to change his ways.
Violinists in black turtlenecks played plaintively to a soundtrack of hard-luck stories, including one man's descent from doorman to depression and another who declared himself as useful as "a one-legged Rockette".
But if any candidate declared himself as a responsible power for life, I might well vote for them - I'd even go barefoot to vote.
In our own Tips, Links and Suggestions, regular commenter PaulBowes01 declared himself as the author of more than 200 reviews, and said "I can tell you that most reviews on Amazon and Goodreads are clearly not purchased.
He has not, we believe, declared himself as yet even in favour of prohibiting the internal Slave Trade between the different States, a measure which is the only efficient step towards the extinction of slavery that is constitutionally within the power of Congress to effect.
Mrpimpgoodgame, real name Benny Winfield Jr, declares himself as the "Leader of the selfie movement" on Instagram.
Then the candidate who captures Ohio could declare himself as having the edge.
After the liberation, it seems Mr. Plée did not declare himself as the possessor of confiscated Jewish property, as required by law; in failing to do so, he risked prison and a heavy fine.
As a victim of toxic exposure himself, a participant in polluting public waters, now proudly declaring himself as an environmentalist, why was he throwing in his lot with the anti-environmental Tea Party?
Cameron thinks he can find some political traction in contrasting his libertarian paternalism from Gordon Brown's economic control-freakery, but Brown is rapidly outgrowing his job as chancellor and will doubtless soon declare himself as a libertarian paternalist too.
