John 4:22-24

You [Samaritans] do not know what you worship; we [Jews] do know what we worship, for salvation is from the Jews. But a time is coming and is already here when the true worshipers will worship the Father in spirit [from the heart, the inner self] and in truth; for the Father seeks such people to be His worshipers. God is spirit [the Source of life, yet invisible to mankind], and those who worship Him must worship in spirit and truth.”