Verb[ない]んがため(に) - Grammar Discussion

Grammar Points
#1

in order to
to
for the purpose of

Structure

  • Verb[ない] + ん + が + ため(に)
  • Verb[ない] + ん + が + ため + の + Noun

:warning: Exception: する → せん

[AんがためにB is a formal and old-fashioned literary expression meaning “in order to” or “for the purpose of”]

[It expresses the great will of the speaker to achieve a goal]

The ん (shortened form of む) is an old suffix expressing volition, that was attached to what we call negative stem or irrealis [未然形]]

[Nowadays, the same idea is expressed by the volitional form. Another example: 言わんとする (nowadays 言おうとする)]

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#2

I saw what I think was a version of this out in the wild that dropped the ため.

“頭を打ち付けんが勢いで頭を下げた。”
A～んがB.

Would it be valid to view A as a consequence of B in this grammar point? Because all of the suggested interpretations of this grammar point on the main page suggest that A is the purpose for B, which doesn’t really track for this sentence and would make less sense the more context I’d give it.

Also the two related grammar points link to the same page.

#3

I am little confused about this sentence.
僕はこの世に何かをなさんがために生まれてきたはずだが、それが何かはまだ分からない。
I thought that the nai form of 為さる was 為さらない and hence it would be 為さらん. Is this a special case?

#4

為す

#5

ah of course, that makes a lot more sense. I was just blindly following the prompt word of 為さる, that was with the sentence. thanks Neko