Sinne and Grace cannot dwell in one place

IF Faith beleeu'd that Creede that Essence giues her,
then would she giue the Soule what that doth giue:
Faith's made to know, and doe that which relieues her;
for, by her actiue knowledge she doth liue!

But oft the Soule (though Faith be still her Ghest)
makes Sinne her Steward to prouide her Foode:
How then can Faith such banefull Bits digest,
which but contaminate her vitall Bloud?

Can Faith and Sinne (if they be full in force)
dwell (as if friends they were) in one weake Heart?
No: one will other from the same diuorce;
for, Sou'raignes part with life, ere Lordship part:
Then, want of Faith, with grosse Sin is supplide;
For, Nature vacuum could ne'er abide.