A Holy Prophetess New Risen Up is the line that the messenger speaks in Scene iv Orleans and the context is something like this.
SCENE IV. Orleans.
Enter, on the walls, a Master Gunner and his Boy
Master-Gunner Sirrah, thou know’st how Orleans is besieged,
And how the English have the suburbs won.
My lord, my lord, the French have gathered head:
The Dauphin, with one Joan la Pucelle join’d,
A holy prophetess new risen up,
Is come with a great power to raise the siege.
Here SALISBURY lifteth himself up and groans