Romans 10 is, to me, one of the big ones.
Paul cleary states that Jesus is Lord and to proclaim him as such is to be saved:
8 But what does it say? “ The word is near you, in your mouth and in your heart ”—that is, the word of faith which we are preaching, 9 that if you confess with your mouth Jesus as Lord, and believe in your heart that God raised Him from the dead, you will be saved; 10 for with the heart a person believes, resulting in righteousness, and with the mouth he confesses, resulting in salvation.
He continues and states:
. 11 For the Scripture says, “ Whoever believes in Him will not be disappointed .” 12 For there is no distinction between Jew and Greek; for the same Lord is Lord of all, abounding in riches for all who call on Him; 13 for “ Whoever will call on the name of the Lord will be saved .”
Making it clear that the name one is to call on to be saved is the Name of Jesus.
BUT the NWT takes the verse in question that is from the prophet Joel and, disreagrd the contect of what Paul said and was proclaiming ( that salvation is in Jesus' name) and they state:
Whoever will call on the name of Jehovah wil be saved.
A blatant attempt to undermine Paul's writings and using the pretext of an OT verse to do it.
Funny thing is that, reading it their way, it seems that the NWT is imply that Jesus is Jehovah, LOL !