New King James Version (NKJV)
God is Spirit, and those who worship Him must worship in spirit and truth.”

New International Version (NIV)
God is spirit, and his worshipers must worship in the Spirit and in truth.”

English Standard Version (ESV)
God is spirit, and those who worship him must worship in spirit and truth.”

King James Version (KJV)
God is a Spirit: and they that worship him must worship him in spirit and in truth.