John 4:24

24SpiritπνεῦμαὁGod [is]θεός,andκαὶthoseτοὺςworshipingπροσκυνοῦνταςhimαὐτὸνinἐνspiritπνεύματιandκαὶtruthἀληθείᾳit behoovesδεῖto worshipπροσκυνεῖν.

God [is] Spirit, and it is necessary for those worshiping Him to worship in spirit and truth.”