Esther 4:1-3 describes Mordecai in sackcloth and ashes, contrasting sharply with the light, joy, and honor in Esther 8:16.

Esther 4:16 records fasting before risking her life, contrasting with the gladness and honor after deliverance in Esther 8:16.

Esther 9:17 records the Jews' feasting and gladness after their victory—the direct outcome of the light and joy proclaimed in Esther 8:16.

Psalm 30:5-11 describes God turning mourning into dancing and joy in the morning—the same reversal from sorrow to light and gladness as in Esther 8:16.

Psalm 97:11 pairs light and joy for the upright—directly mirroring the light, gladness, and joy the righteous Jews received in Esther 8:16.

Proverbs 11:10 says the city rejoices when righteous prosper and wicked perish—exactly the scenario behind the Jews' joy in Esther 8:16.