en_tn_condensed/lam/04/05.md

feast on

"eat much"

now starve in the streets

These people no longer have homes, so they live outside along the streets.

Those who were brought up wearing scarlet clothing

This can be stated in active form. Alternate translation: "those who grew up wearing scarlet clothing" or "those who wore scarlet clothing when they were growing up" (See: rc://en/ta/man/translate/figs-activepassive)

scarlet clothing

Here this phrase is a metonym for luxurious, expensive, and comfortable clothing, at least some of which was probably scarlet. Alternate translation: "luxurious clothing" (See: rc://en/ta/man/translate/figs-metonymy)

now lie on piles of ashes

This is because they no longer have homes and soft beds.