The Gerundive expresses purpose here, as often.
"Selections from Viri Romae"
Charles François L'Homond
Tenth line, last word-gerund, Channing, or Gerundive?
"The Varmint"
Owen Johnson F. R. Gruger
It was the Gerundive, Channing.
"The Varmint"
Owen Johnson F. R. Gruger