John 4:24

God is spirit, and those who worship him must worship in spirit and truth."

2 Corinthians 3:17

Now the Lord is the Spirit, and where the Spirit of the Lord is, there is freedom.

Matthew 15:8-9

'These people honor me with their lips, but their heart is far from me.

Philippians 3:3

For we are the true circumcision, who worship in the Spirit of God, and glory in Christ Jesus, and put no confidence in the flesh,

2 Corinthians 1:12

For our boast is this: the testimony of our conscience, that with holiness and godly sincerity, not in worldly wisdom but in the grace of God, we have conducted ourselves in the world, and still more toward you.

1 Timothy 1:17

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

Must

Matthew 15:8
'These people honor me with their lips, but their heart is far from me.
2 Corinthians 1:12
For our boast is this: the testimony of our conscience, that with holiness and godly sincerity, not in worldly wisdom but in the grace of God, we have conducted ourselves in the world, and still more toward you.