The WTS has made a comparison between the original Greek from the Westcott-Hort text and the NWT rendering fairly simple through their own Kingdom Interlinear Translation. As the editors of this publication explain, "The word-for-word interlinear translation and the New World Translation are arranged in parallel on the page, so that comparisons can be made between the two readings. Thus, the accuracy of any modern translation can be determined."
So, let's have a look at a few examples. (The Society's own 1969 word-for-word KIT translation will appear first). I will put in all caps any words that seem to be added, deleted, or altered to change the meaning rather than to make English reading smoother. I only have so much space—this is by no means exhaustive:
Rom. 14:8-9: if ever and for we may be living, to the LORD we are living, if ever and we may be dying, to the LORD we are dying. If ever and therefore we may be living if ever and we may be dying, of the LORD we are. Into this for Christ died and he lived in order that and of dead (ones) and of living (ones) he might be lord.
"for both if we live, we live to JEHOVAH, and if we die, we die to JEHOVAH. Therefore both if we live and if we die, we belong to JEHOVAH. For to this end Christ died and came to life again, that he might be Lord over both the dead and the living.
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Col. 1:16-17: because in him it was created the all (things) in the heavens and upon the earth, the (things) visible and the (things) invisible…the all (things) through him and into him it has been created; and he is before all (things) and the all (things) in him it has stood together,
because by means of him all [OTHER] things were created in the heavens and upon the earth, the things visible and the things invisible…All [OTHER] things have been created through him and for him. Also, he is before all [OTHER] things and by means of him all [OTHER] things were made to exist,
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Rom. 8:1: Nothing really NOW condemnation to the (ones) in Christ Jesus;
"Therefore those in union with Christ Jesus have no condemnation."
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Rom. 8:28: We have known by that to the (ones) loving the God ALL (THINGS) is working together the God into good, to the (ones) according to purpose called (ones) being.
"Now we know that God makes all HIS WORKS co-operate together for the good of those who love God, those who are the ones called according to his purpose;"
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Rom. 8:32: Who in fact of the own Son not he spared, but over us all he gave beside him, how not also together with him the ALL (things) to us will he graciously give?
"He who did not even spare his own Son but delivered him up for us all, why will he not also with him kindly give us all OTHER things?
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John 14:14: if ever anything you should ask ME in the name of me this I shall do.
"If you ask anything in my name, I will do it.
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John 6:29: …This is the work of the God in order that you may BELIEVE into whom sent forth that (one).
This is the work of God, that you EXERCISE FAITH in him whom that One sent forth.
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John 6:40: This for is the will of the Father of me in order that everyone the beholding the Son and BELIEVING into him may have life everlasting, and I shall resurrect him I to the last day.
For this is the will of my Father, that everyone that beholds the Son and EXERCISES FAITH in him should have everlasting life, and I will resurrect him at the last day.
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John 1:1: In beginning was the Word, and the Word was toward the God, and god was the Word.
In [the] beginning the Word was, and the Word was with God, and the Word was A god.
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1 Cor. 14:12-16: Thus also you, since zealous you are of spirits, toward the upbuilding of the ecclesia be you seeking in order that you may be abounding…If ever for I am praying to tongue, the spirit of me is praying, the but mind of me unfruitful is. What therefore is it? I shall pray to the spirit, I shall pray but also to the mind; I shall make melody to the spirit, I shall make melody but also to the mind; since if ever you may be blessing in spirit, the (one) filling up the place of the ordinary (one) how will he say the Amen upon the your thanksgiving?
So also you yourselves, since you are zealously desirous of [GIFTS OF THE] spirit, seek to abound in them for the upbuilding of the congregation…For if I am praying in a tongue, it is my [GIFT OF THE] spirit that is praying, but my mind is unfruitful. What is to be done, then? I will pray with the [GIFT OF THE] spirit, but I will also pray with [my] mind. I will sing praise with the [GIFT OF THE] spirit, but I will also sing praise with [my] mind. Otherwise, if you offer praise with a [GIFT OF THE] spirit, how will the man occupying the seat of the ordinary person say “Amen” to your giving of thanks, since he does not know what you are saying?
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1 Tim. 4:1: The but SPIRIT spokenly is saying...
However, the INSPIRED UTTERANCE says...