Are Mormons Christians, pgs. 80-81; “Actually John 4:24 should be translated “God is Spirit” rather than “God is a Spirit,” for there is no indefinite article (a, an) in the Greek language, and it is always a matter of subjective judgment as to when the translator should add one… Like first-century Jewish Christians, the Latter-day Saints do not understand the categories of “spirit” and “element” to be mutually exclusive. According to Joseph Smith, “there is no such thing as immaterial matter. All spirit is matter, but it is more fine or pure, and can only be discerned by purer eyes” (D&C 131:7). Thus Latter-day Saints understand the term spiritual to mean “infused with spirit,” whereas Hellenized Christianity would under- stand it to mean “incorporeal.””
John 4:24; “God is a Spirit: and they that worship him must worship him in spirit and in truth.”
Spirit is not matter. John 4:24 is inspired by God Almighty and who are you to say what it should have said?