John 4:24

God is a Spirit, and those that worship him must worship in spirit and truth.

2 Corinthians 3:17

And the Lord is the Spirit; and where the Spirit of the Lord is there is liberty.

Matthew 15:8-9

This people honors me with the lips, but their heart is far from me.

Philippians 3:3

We are the circumcision, who serve God in spirit, and rejoice in Christ Jesus, and trust not in the flesh,

2 Corinthians 1:12

For this is our rejoicing; the testimony of our conscience that in purity and godly sincerity, not with a carnal wisdom, but with a divine grace, we have conducted ourselves in the world, and most abundantly towards you.

1 Timothy 1:17

And to the King eternal, immortal, invisible, the only God, be honor and glory forever and ever; 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
And the Lord is the Spirit; and where the Spirit of the Lord is there is liberty.
1 Timothy 1:17
And to the King eternal, immortal, invisible, the only God, be honor and glory forever and ever; amen.

Must

Matthew 15:8
This people honors me with the lips, but their heart is far from me.
2 Corinthians 1:12
For this is our rejoicing; the testimony of our conscience that in purity and godly sincerity, not with a carnal wisdom, but with a divine grace, we have conducted ourselves in the world, and most abundantly towards you.