Esther 2:7 establishes Mordecai as her guardian — the basis for his authority to command her concealment.

In Esther 2:20, this same concealment is reaffirmed and explained as Esther's obedience to Mordecai, reinforcing her loyalty.

Esther 3:8 reveals Haman's plot against the Jews — Esther's hidden identity in 2:10 becomes crucial for the conflict.

Esther 4:13 is Mordecai's warning that her hidden identity won't protect her — a direct response to her concealment.

Esther 4:14 suggests her hidden identity might be providential — 'for such a time as this' — building on her secrecy.

Esther 7:4 is where Esther reveals her Jewish identity — the opposite action to her concealment in 2:10.