John 4:24

God is a spirit, and they that worship Him, must worship in spirit and truth.

2 Corinthians 3:17

now the Lord is that Spirit; and where the Spirit of the Lord is, there is liberty.

Matthew 15:8-9

saying, This people approach me with their mouth, and honour me with their lips, but their heart is far from me:

Philippians 3:3

For we are of the true circumcision, who worship God in spirit, rejoicing in Christ Jesus, and having no confidence in the flesh.

2 Corinthians 1:12

For this is our rejoicing, the testimony of our conscience, that in simplicity and pious sincerity, not with carnal wisdom, but by the grace of God, we have had our conversation in the world, and especially towards you.

1 Timothy 1:17

Now to the King eternal, immortal, invisible, the only wise God, be honor and glory for ever 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
now the Lord is that Spirit; and where the Spirit of the Lord is, there is liberty.
1 Timothy 1:17
Now to the King eternal, immortal, invisible, the only wise God, be honor and glory for ever and ever. Amen.

Must

Matthew 15:8
saying, This people approach me with their mouth, and honour me with their lips, but their heart is far from me:
2 Corinthians 1:12
For this is our rejoicing, the testimony of our conscience, that in simplicity and pious sincerity, not with carnal wisdom, but by the grace of God, we have had our conversation in the world, and especially towards you.