Sovereign, Sustaining Grace

I just finished reading a sermon by John Piper titled Sustained By Sovereign Grace--Forever. What an encouragement! The main text is Jeremiah 32:36-41 which speaks of a new covenant that will be initiated by God and will sustain His people by His sovereign power. This is a must read. Piper sums up the kind of grace he is talking about in a short poem that he wrote that goes like this:

Not grace to bar what is not bliss,
Nor flight from all distress, but this:
The grace that orders our trouble and pain,
And then, in the darkness, is there to sustain.

You can read the sermon here.