Deuteronomy 15:8

But thou shalt open thine hand wide unto him,.... And give him bountifully and liberally; in order to which the heart must be first opened, the affections moved, and a willing mind disposed to give generously:

and shalt surely lend him sufficient for his need in that which he wanteth: enough to answer his present exigencies, but not to cause him to abound, or to supply him with things needless and superfluous.