Although David Wilkerson is a personal hero of mine, I can no longer agree with his views of God constantly being about to destroy the world because of it's evil. Wilkerson was as sincere as you can get in his beliefs. I used to read his sermons regularly as a teenager. I have a lot of them saved. Looking back, David's influence really helped me in some ways and really hurt me in others.
Most of this book would be the latter-its influence had a very negative impact on my spiritual life. It certainly did not lead me to love people more or be a better representation of Jesus. It was the kind of material that led me to be always focusing on sin instead of on the gospel. I later needed to be delivered from that.
David worded his prophesies in the strongest of terms. He stated that no matter how much prayer or intercession went forth, there was no stopping these catastrophic events. He stated with all certainty that certain ones (such as a thousand fires burning throughout NYC) would happen before his death.
Some of the things Wilkerson predicted, such as the spread and accessibility of the vilest of pornography, have been fulfilled. Others, which he said would certainly happen before his death, did not happen before his death.
I love Wilkerson's heart and his stories, such as "The Cross And The Switchblade". His book "The New Covenant Unveiled" also had a lot of good material, although I don't remember the details of it very well. However, his theology on the "end times" and an Old Covenant view of constant, impending judgement, have done far more harm than good.