The true, the genuine worship is when man, through his spirit, attains to friendship and intimacy with God. True and genuine worship is not to come to a certain place; it is not to go through a certain ritual or liturgy; it is not even to bring certain gifts. True worship is when the spirit, the immortal and invisible part of man, speaks to and meets with God, who is immortal and invisible.
William Barclay (1956). “The Gospel of John”