Excerpt from http://www.jesus-is-lord.com/nivdelet.htm 

Please note that these are only WHOLE verses that the NIV deletes. This list does not include the many words and phrases that were completely deleted from the NIV--it deletes over 64,000 words including words like mercyseat, Jehovah, and Godhead. It removes meaningful, well-known Bible words like Calvary, Lucifer, new testament, regeneration, etc. Most of the modern Bibles line up very closely with the NIV--and so does the New World Translation--the Bible of the Jehovah's Witnesses which predates the NIV!

May I recommend Lifeway’s on-line bible?  You will notice the NIV, NWT, and others listed above missing from their choices, and I’ll bet you can guess why.

  After reading this section I hope you will distance yourself from any source that leans on NIV. 

To be Fair and Balanced I should note that the International Bible Society, the publishers of the NIV, argue that the King James has words ADDED and therefore is not accurate. www.IBS.org/niv/accuracy.  If you click that old link you will find it now takes you to  http://www.biblica.com/niv/ and should take you to  http://www.biblica.com/niv/accuracy/  where instead of arguing accuracy they concentrate on which is easier to read, in most cases modifying the subject or verb and changing the context...   Some will find this quite confusing so I will simply ask you to read the verses below that the NIV left out.  If you believe the verses were simply added to the KJV to make it better, then check faith, because you now believe words that never existed established the doctrine of 90% of Christian Beliefs.  Many are the words of Christ, many others speak to His Deity.  The truth is there is more wrong with NIV than missing or misleading words.  The newest revision to the NIV is to be released in March 2011 with no indication on the outside that it has been changed again.  Can't wait to see what is taken out or changed next.

"If we would not change a comma in the Gettysburg Address, why in the name of heaven would we tamper with the Word of God?"

Excerpt from http://www.jesus-is-lord.com/nivdelet.htm

The following WHOLE verses have been removed in the NIV--whether in the text or footnotes...over 40 IN ALL!!!

Matthew 12:47 -- removed in the footnotes

Matthew 17:21 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"Howbeit this kind goeth not out but by prayer and fasting."

Matthew 18:11 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"For the Son of man is come to save that which was lost."

Matthew 21:44 -- removed in the footnotes

Matthew 23:14 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"Woe unto you, scribes and Pharisees, hypocrites! for ye devour widows' houses, and for a pretence make long prayer: therefore ye shall receive the greater damnation."

Mark 7:16 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"If any man have ears to hear, let him hear."

Mark 9:44 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"Where their worm dieth not, and the fire is not quenched."

Mark 9:46 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"Where their worm dieth not, and the fire is not quenched."

Mark 11:26 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"But if ye do not forgive, neither will your Father which is in heaven forgive your trespasses."

Mark 15:28 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"And the scripture was fulfilled, which saith, And he was numbered with the transgressors."

Mark 16:9-20 (all 12 verses) -- There is a line separating the last 12 verses of Mark from the main text. Right under the line it says: [The two most reliable early manuscripts do not have Mark 16:9-20] (NIV, 1978 ed.) The Jehovah's Witness "Bible" also places the last 12 verses of Mark as an appendix of sorts.

Luke 17:36 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"Two men shall be in the field; the one shall be taken, and the other left."

Luke 22:44 -- removed in the footnotes

Luke 22:43 -- removed in the footnotes

Luke 23:17 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"(For of necessity he must release one unto them at the feast.)"

John 5:4 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"For an angel went down at a certain season into the pool, and troubled the water: whosoever then first after the troubling of the water stepped in was made whole of whatsoever disease he had."

John 7:53-8:11 -- removed in the footnotes

Acts 8:37 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. It's deletion makes one think that people can be baptized and saved without believing on the Lord Jesus Christ. Sounds Catholic. What are you NIV readers missing?
"And Philip said, If thou believest with all thine heart, thou mayest. And he answered and said, I believe that Jesus Christ is the Son of God."

Acts 15:34 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"Notwithstanding it pleased Silas to abide there still."

Acts 24:7 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"But the chief captain Lysias came upon us, and with great violence took him away out of our hands,"

Acts 28:29 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"And when he had said these words, the Jews departed, and had great reasoning among themselves."

Romans 16:24 -- COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. What are you NIV readers missing?
"The grace of our Lord Jesus Christ be with you all. Amen."

I John 5:7 -- Vitally important phrase COMPLETELY removed [also deleted from the Jehovah's Witness "Bible"]. In the NIV it says,

"For there are three that testify:"

Compare the NIV reading with the following Jehovah's Witness reading--

"For there are three witness bearers,"

What are you NIV readers missing? What does the real Bible say?

"For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one."

This is one of the GREATEST verses testifying of the trinity. That is why the Jehovah's Witnesses leave it out. They do not believe in the trinity and they do not believe that Jesus is God. Why does the NIV leave it out...? Whole books have been written on the manuscript evidence that supports inclusion of this verse in the Bible. Reader, do you believe in the triunity of God? If so, then this deletion should offend you. People are playing around with the Bible and it ain't funny.