In the first month, that is, the month {c} Nisan, in the twelfth year of king Ahasuerus, they cast Pur, that is, the lot, {d} before Haman from day to day, and from month to month, to the twelfth month, that is, the month {e} Adar.

(c) Which contains part of March and part of April.

(d) To know what month and day would be good to attempt this thing, that it might be successful: but God disappointed their lots and expectations.

(e) Containing part of February and part of March.

Wesley's Notes

3:7 They cast - The diviners cast lots, according to the custom of those people, what day, and what month would be most lucky, not for his success with the king (of which he made no doubt) but for the most effectual extirpation of the Jews. Wherein appears likewise both his implacable malice, and unwearied diligence in seeking vengeance of them with so much trouble to himself; and God's singular providence in disposing the lot to that time, that the Jews might have space to get the decree reversed.

Scofield Reference Notes

Margin first month

i.e. April; Est 3:12

Margin twelfth month

i.e. March; Est 3:13

Jamieson-Fausset-Brown Bible Commentary

7. In the first month . they cast Pur, that is, the lot-In resorting to this method of ascertaining the most auspicious day for putting his atrocious scheme into execution, Haman acted as the kings and nobles of Persia have always done, never engaging in any enterprise without consulting the astrologers, and being satisfied as to the lucky hour. Vowing revenge but scorning to lay hands on a single victim, he meditated the extirpation of the whole Jewish race, who, he knew, were sworn enemies of his countrymen; and by artfully representing them as a people who were aliens in manners and habits, and enemies to the rest of his subjects, he procured the king's sanction of the intended massacre. One motive which he used in urging his point was addressed to the king's cupidity. Fearing lest his master might object that the extermination of a numerous body of his subjects would seriously depress the public revenue, Haman promised to make up the loss.

Matthew Henry's Concise Commentary

3:7-15 Without some acquaintance with the human heart, and the history of mankind, we should not think that any prince could consent to a dreadful proposal, so hurtful to himself. Let us be thankful for mild and just government. Haman inquires, according to his own superstitions, how to find a lucky day for the designed massacre! God's wisdom serves its own purposes by men's folly. Haman has appealed to the lot, and the lot, by delaying the execution, gives judgment against him. The event explains the doctrine of a particular providence over all the affairs of men, and the care of God over his church. Haman was afraid lest the king's conscience should smite him for what he had done; to prevent which, he kept him drinking. This cursed method many often take to drown convictions, and to harden their own hearts, and the hearts of others, in sin. All appeared in a favourable train to accomplish the project. But though sinners are permitted to proceed to the point they aim at, an unseen but almighty Power turns them back. How vain and contemptible are the strongest assaults against Jehovah! Had Haman obtained his wish, and the Jewish nation perished, what must have become of all the promises? How could the prophecies concerning the great Redeemer of the world have been fulfilled? Thus the everlasting covenant itself must have failed, before this diabolical project could take place.