John 4:24

God is Spirit; and those who worship Him must bring Him true spiritual worship."

2 Corinthians 3:17

Now by "the Lord" is meant the Spirit; and where the Spirit of the Lord is, freedom is enjoyed.

Matthew 15:8-9

"'This is a People who honour Me with their lips, while their heart is far away from Me;

Philippians 3:3

For we are the true circumcision--we who render to God a spiritual worship and make our boast in Christ Jesus and have no confidence in outward ceremonies:

2 Corinthians 1:12

For the reason for our boasting is this--the testimony of our own conscience that it was in holiness and with pure motives before God, and in reliance not on worldly wisdom but on the gracious help of God, that we have conducted ourselves in the world, and above all in our relations with you.

1 Timothy 1:17

Now to the immortal and invisible King of the Ages, who alone is God, be honour and glory to the Ages of the Ages! Amen.

Treasury of Scripture Knowledge

Summary

God is a Spirit: and they that worship him must worship him in spirit and in truth.

Bible References

A spirit

2 Corinthians 3:17
Now by "the Lord" is meant the Spirit; and where the Spirit of the Lord is, freedom is enjoyed.
1 Timothy 1:17
Now to the immortal and invisible King of the Ages, who alone is God, be honour and glory to the Ages of the Ages! Amen.

Must

Matthew 15:8
"'This is a People who honour Me with their lips, while their heart is far away from Me;
2 Corinthians 1:12
For the reason for our boasting is this--the testimony of our own conscience that it was in holiness and with pure motives before God, and in reliance not on worldly wisdom but on the gracious help of God, that we have conducted ourselves in the world, and above all in our relations with you.