Thanks...it was most certainly "henceforth". This is what I came up with:
And, re-assembling our afflicted powers, consult how we may henceforth most offend.
Unless the "p" in "powers" is wrong then I'm pretty sure this is the answer.
I appreciate all of your help. If I run into this quote again I'll still kind of feel like I cheated. But, since I now know the answer, it is likely that I wil never, ever see this particular quote again.