Mark 3:29
Mark 3:2929But whoever blasphemes against the Holy Spirit will never be forgiven; he is guilty of eternal sin.”
The Watchtower reads "blasphemy against the holy spirit" as deliberate, knowing opposition to God's purposes carried out through his active force. Because JW theology denies the personhood of the Holy Spirit, "blasphemy against the spirit" is reframed as opposition to God's power-in-action, not as offence against a divine person. The "everlasting sin" warning is taken as a category of irreversible apostasy rather than as evidence of the Spirit's distinct personal identity.
Blasphemy is inherently personal — you cannot blaspheme electricity or gravity. Blasphēmia in biblical Greek is always directed at persons (God, rulers, divine beings). The fact that the Spirit can be blasphemed is itself evidence of personhood. And notice the relative ranking: blasphemy against the Son of Man is forgivable, blasphemy against the Spirit is not. If the Spirit is merely God's impersonal active force, why does offending him outrank offending the Son? The structure makes sense only if the Spirit is a divine person — distinct from the Father and the Son, equally divine, equally able to be blasphemed. Pair with (lying to the Spirit is lying to God) for the cumulative case for Spirit-personhood.
The NWT lower-cases "holy spirit" throughout the New Testament, including here, and renders aiōnios as "everlasting" rather than "eternal." The lower-casing reflects the JW doctrine that the Holy Spirit is not a person but an impersonal active force, so the noun does not merit personal-noun capitalisation. Standard English translations capitalise "Holy Spirit" because the Spirit is the third person of the Trinity, addressed personally throughout the New Testament (, 15:26, 16:7-15; , 26-27). The systematic NWT lower-casing is one of the most consistent translation choices in the entire NWT, and it is doctrinally load-bearing across every pneumatological passage in the Gospels and Acts.