Sentence:  ... give thou also before asking; that is, where want is silently clamorous, and men's necessities not their tongues do loudly call for thy mercies. For though sometimes <WSD>necessitousness</WSD> be dumb, or misery speak not out, yet true charity is sagacious, and will find out hints for beneficence. 
Meaning of the word marked with <WSD> tags:  The state or condition of impoverishment; material need, especially of an urgent nature.