Verse 21. -
The king did according to the word of Memucan. This expression must not be pressed too closely. It does not imply more than that Memucan's advice was followed in a general way - Vashti disgraced, and the grounds of her disgrace published throughout the provinces. We cannot be sure that the decree was "written among the laws of the Persians and the Medes." Even if it was, it was always possible for a Persian king to give himself a dispensation from the law (see Herod., 3:58).
1:10-22 Ahasuerus's feast ended in heaviness, by his own folly. Seasons of peculiar festivity often end in vexation. Superiors should be careful not to command what may reasonably be disobeyed. But when wine is in, men's reason departs from them. He that had rule over 127 provinces, had no rule over his own spirit. But whether the passion or the policy of the king was served by this decree, God's providence made way for Esther to the crown, and defeated Haman's wicked project, even before it had entered into his heart, and he arrived at his power. Let us rejoice that the Lord reigns, and will overrule the madness or folly of mankind to promote his own glory, and the safety and happiness of his people.
And the saying pleased the king and the princes,.... The king, and the other six princes and counsellors, approved of the proposal, and unanimously agreed to it:
and the king did according to the word of Memucan; passed a law according to his advice, and signed and sealed it, and registered it among the laws of the kingdom, not to be revoked.