Isaiah 42:8
Isaiah 42:88I am the LORD; that is My name! I will not yield My glory to another or My praise to idols.
JWs accept ("I am Jehovah. That is my name; I give my glory to no one else, nor my praise to graven images") as a foundational monotheism text and use it to argue that worship and divine glory belong exclusively to Jehovah, never to Jesus. The verse is enlisted to defend the Watchtower's two-tier honour system: Jesus may receive "respect" or "obeisance" as God's chief representative, but anything approaching divine worship would violate by giving Jehovah's exclusive glory to a creature. The Watchtower has stated that "any who use Jesus' name in their worship but fail to give the greater honour to Jehovah do not manifest a genuine love of the light," and is the proof-text behind that "greater honour" claim.
is a logical fork the Watchtower cannot escape. Jehovah declares his glory non-transferable: he gives it "to no one else." Yet in , Jesus prays to receive back "the glory I had with you before the world was" — pre-existent shared glory between Father and Son. The two statements are only consistent if Jesus is Jehovah; any other reading forces Jehovah to violate his own oath. doubles the point ("for my own sake I will act, for how could I let myself be profaned? I will not give my glory to anyone else"). Then turns into a hammer when paired with , where every creature in heaven and earth gives "blessing and honour and glory and might forever and ever" jointly to "the One sitting on the throne and to the Lamb." Either John saw the universe commit cosmic idolatry, or Jesus is the same Jehovah whose glory cannot be given to another. The same fork appears in : the Father "has given all the judging to the Son, so that all may honour the Son just as (kathōs) they honour the Father." Equal honour to a creature would breach ; equal honour to Jesus is mandated. Only Trinitarian Christology resolves the tension without making Jehovah a liar.