Thanks for your question.
Heaven in Scripture:
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Dwelling of God – 1 Kings 8:30
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Universe – Psalm 8:3,4
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Atmosphere [sky] – Zechariah 2:6
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Political Power – Ezekiel 32:7,8; Isaiah 34:4,5,8-12; 13:10 so to “fall from heaven” metaphorically means to fall from a position of power – Isaiah 1:2,10; Deuteronomy 31:30; 32:1; Lamentations 2:1,2
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Power in Christ – Ephesians 6:3
Here is some information on the website which you might find interesting.