Romans 10:16
Romans 10:1616But not all of them welcomed the good news. For Isaiah says, “Lord, who has believed our message?”
Watchtower commentary takes as proof that obedience to "the good news" is required for salvation — faith and obedience are equated. The verse also serves the Watchtower's case for the divine name in the New Testament: Paul calls upon "Jehovah" when quoting Isaiah, supporting the NWT's restoration of YHWH wherever ancient Greek manuscripts use Kyrios in OT-quotation contexts.
is decisive on the equivalence of obedience and faith. Paul says "they did not all obey the good news" and immediately quotes Isaiah saying "who has BELIEVED what he has heard from us?" Obeying and believing are the same act — this resolves ("salvation to all who obey him") and ("obedience by faith"): the obedience meant is the obedience of faith, the initial trusting surrender to the gospel. But the verse is also the most exposed point of the NWT's Jehovah-insertion practice. The Greek text reads Kyrie ("Lord") in Paul's quotation of LXX. The NWT inserts "Jehovah" — and in doing so blocks the Christological reading that has built toward, where Paul applies the OT "calling on Jehovah" formula directly to "calling on the Lord [Jesus]."
The NWT inserts "Jehovah" where the Greek New Testament manuscripts read Kyrie ("Lord"). LXX uses Kyrie; Paul's quotation reproduces it. No NT manuscript contains the Tetragrammaton here. The insertion blocks the Christological identification Paul has been building from 10:9 ("if you confess with your mouth that Jesus is Lord… you will be saved") through 10:13 ("everyone who calls on the name of Jehovah will be saved" — also an NWT insertion, where the Greek reads Kyriou). When the chapter is read with the NWT's restored "Jehovah," the natural Christ=YHWH inference Paul forces on his Greek-reading audience is severed.