You asked

how does the new testament reimagine 'jerusalem' or 'temple' as a spiritual rather than physical place?

The passage, plainly, with room to sit with it.

John 4:21-24

“Jesus said to her, "Woman, believe me, the hour comes, when neither in this mountain, nor in Jerusalem, will you worship the Father. You worship that which you don't know. We worship that which we know; for salvation is from the Jews. But the hour comes, and now is, when the true worshipers will worship the Father in spirit and truth, for the Father seeks such to be his worshipers. God is spirit, and those who worship him must worship in spirit and truth."”

This passage is part of a conversation between Jesus and a Samaritan woman at a well. They are discussing their different traditions regarding the proper place of worship: the Samaritans worshipped on Mount Gerizim, while the Jews worshipped in Jerusalem.

What does it mean for your own practice of faith to worship 'in spirit and truth' rather than being bound to a specific location or ritual?

Keep thinking

Read alongside it

Hebrews 12:22
This passage speaks of believers approaching 'Mount Zion, the city of the living God, the heavenly Jerusalem,' emphasizing a spiritual reality.
1 Corinthians 6:19-20
Paul speaks of the believer's body as a 'temple of the Holy Spirit,' shifting the concept of sacred space to the individual.
Revelation 21:22
In John's vision of the new Jerusalem, he states, 'I saw no temple in it, for the Lord God Almighty and the Lamb are its temple,' indicating a ultimate spiritualization of worship.

Ask your own follow-up