John Piper on being overly zealous.

"... my sense is that in the prosperous West, the danger in the church is not that there are too many overly zealous people who care too deeply about the lost, and invest hazardously in the cause of the Gospel, and ruin their lives with excessive mercy to the poor. For every careless saint who burns himself out and breaks up his family with misdirected zeal, I venture, there are a thousand who coast with the world, treating Jesus like a helpful add-on, but not as an all-satisying, all -authoritative King in the cause of love." ~ John Piper, "Don't Waste Your Life"