Matthew 4:10
Then Jesus told him, "Begone, Satan! it is written, You must worship the Lord your God, and serve him alone."
Luke 4:8
Jesus answered him, "It is written, You must worship the Lord your God, and serve him alone."
Matthew 6:24
No one can serve two masters: either he will hate one and love the other, or else he will stand by the one and despise the other ??you cannot serve both God and Mammon.
Matthew 15:8
This people honours me with their lips, but their heart is far away from me:
John 4:24
God is Spirit, and his worshippers must worship him in Spirit and in reality."