The king's act of giving Mordecai the signet ring is a powerful symbol of trust and authority. In ancient times, a signet ring was used to seal documents, signifying the king's approval and command. By presenting it to Mordecai, the king not only rewards him for his loyalty and bravery but also entrusts him with significant responsibility. This transfer of power marks a complete reversal of Haman's fortunes, who had plotted against the Jews.
Esther's decision to appoint Mordecai over Haman's estate further underscores her strategic thinking and leadership. She ensures that the wealth and influence once used for evil are now redirected for good. This narrative highlights the themes of divine justice and providence, showing how God can turn dire situations around for His people. It serves as an encouragement to remain faithful and courageous, trusting that righteousness and justice will ultimately prevail.