Out of everything in the whole universe, our human spirit is the most important because it allow us to worship God who is Spirit.
God wants worship, the best (and only) way is to worship God is with our spirit, because God is Spirit. See John 4:24 where Jesus says “God is a Spirit: and they that worship him must worship him in spirit and in truth”. Notice where there is a capital Spirit referring to God, and a lower case spirit related to our human spirit.
So watch this short devotional video on “Worship God in Spirit”
Then in the book of Zechariah, the writer in 12:1 talks about the heavens, the earth and the spirit of man. Zechariah 12:1 “The burden of the word of the Lord for Israel, saith the Lord, which stretcheth forth the heavens, and layeth the foundation of the earth,
and formeth the spirit of man within him”.
In the whole universe, our human spirit is the most important because it allow us to worship God who is Spirit. Having a human spirit is like having a radio receiver tuned to the right frequency to connect with and listen to God who on the “Spirit” wavelength.