Philippians 1:19
Philippians 1:1919because I know that through your prayers and the provision of the Spirit of Jesus Christ, my distress will turn out for my deliverance.
The Watchtower reads "the spirit of Jesus Christ" as Jesus's teachings, example, or his shared use of Jehovah's active force — not as a personal Spirit who is Christ's own. JW theology denies the personhood of the Holy Spirit and denies that Christ has or sends a Spirit of his own apart from being a vehicle of Jehovah's power. The phrase is typically muted or paraphrased to avoid the Christological implication that the Son shares the divine prerogative of sending the Spirit.
"The spirit of Jesus Christ" is Trinitarian language. Pair with (the Spirit of Christ in the Old Testament prophets), (you have "the Spirit of Christ"), (God has sent forth "the Spirit of his Son into our hearts"), and (the "Spirit of Jesus" prevented Paul from going). Five passages identify the Spirit as Christ's own — a relationship of shared divine identity that the JW unitarian framework cannot bear. If Christ is a created being, what is the Spirit "of"? The Father's Spirit alone? But the New Testament names the same Spirit as the Father's Spirit AND the Son's Spirit — which presupposes the Son's full divinity.
The NWT renders pneuma Iēsou Christou as "the spirit of Jesus Christ" — lower-case, no capital. The systematic NWT depersonalisation of pneuma applies here as it does at , , , and elsewhere. Standard English translations capitalise "Spirit" because the Greek personal- noun usage and surrounding theology identify the Spirit as the third person of the Trinity who proceeds from the Father and the Son. The lower-casing here is doctrinally weighty because directly identifies the Spirit as belonging to Jesus Christ — a relationship the JW framework cannot allow if Jesus is merely a created being.