Joel 2:32
Joel 2:3232And everyone who calls on the name of the LORD will be saved; for on Mount Zion and in Jerusalem there will be deliverance, as the LORD has promised, among the remnant called by the LORD.
JWs treat this verse as a cornerstone proof that using God's personal name — Jehovah — is essential for salvation. The Watchtower argues that "calling on the name of Jehovah" means knowing, using, and publicly proclaiming the divine name, and that this practice distinguishes true worshippers from the churches of Christendom, which have allegedly suppressed God's name. The verse is also used to justify the NWT's insertion of "Jehovah" into New Testament passages that quote or allude to (, ), on the grounds that the original Old Testament source contains the Tetragrammaton and therefore the New Testament quotation must as well.
is an YHWH-exclusive worship text: salvation belongs to those who call on the name of the LORD. The christological significance emerges when the New Testament authors quote this verse and apply it to Jesus. Peter quotes at Pentecost () in a sermon whose climax identifies Jesus as "both Lord and Christ" (). Paul quotes at — "Everyone who calls on the name of the Lord will be saved" — but Paul's surrounding context () explicitly identifies the "Lord" as Jesus: "If you publicly declare with your mouth that Jesus is Lord... the same Lord is Lord of all." Paul's argument flows seamlessly from confessing Jesus as Lord (v. 9) to calling on the name of the Lord for salvation (v. 13). The NWT breaks this chain by inserting "Jehovah" at while leaving "Lord" (referring to Jesus) in verses 9 and 12 — switching terms mid-paragraph to prevent the reader from seeing that Paul identifies Jesus as the Jehovah of Joel's prophecy. This is one of the clearest examples of the NWT's selective Jehovah-insertion policy: "Jehovah" is inserted where it separates Jesus from YHWH but withheld where it would identify Jesus as YHWH.