[*] 374. The Dative of the Agent is used with the Gerundive to denote the person on whom the necessity rests:—
- “haec vōbīs prōvincia est dēfendenda ” (Manil. 14) , this province is for you to defend (to be defended by you).
- mihi est pūgnandum, I have to fight (i.e. the need of fighting is to me: cf. mihi est liber, I have a book, § 373. N.).
- “ quibus est ā vōbīs cōnsulendum” (Manil. 6) , for whom you must consult. [Here two datives, quibus and vōbīs , would have been ambiguous.]
- “ rem ab omnibus vōbīs prōvidendam ” (Rab. 4) , that the matter must be attended to by all of you. [The dative might mean for all of you.]
[*] Note 2.--The Dative of the Agent is either a special use of the Dative of Possession or a development of the Dative of Reference (§ 376).