In Rv7, after what event do those who are sealed appear?
After the chosen people receive their judgement in Rv 6 (after the sun, moon, stars become dark and fall, after betrayal and destruction)
Where do they come from and how have they come?
Harvested from the harvest field
Who are they, and what have they been purchased with? Include reference verses.
Rv5:9~10, the kingdom and priests who have been purchased with Jesus’ blood
Who are the multitude in white that come after this, and where do they come from?
People who received atonement for sin (those who belong to the 12 tribes), from every nation (tribe, people, language)