The previous answer offered:
Beneficent is used correctly, but the sentence has a few issues, the main issue is how awkward it sounds.
The original answer offered a better example
It offers context, correct grammar, proper capitalisation, and correct use of punctuation.
Here is a literary example of beneficent in a sentence:
In no other way can I account for its having leaped so far out of the water--a beneficent circumstance to which I doubtless owe my life, and that of another far dearer to me than my own. - "The Land That Time Forgot" by Edgar Rice Burroughs