Rashi
Jewish
1040–1105
“Even to half the kingdom A thing that is in the middle and at the halfway mark of the kingdom. That is the Temple, which they started to build in the days of Cyrus, and he reneged and commanded to discontinue the work, and Ahasuerus, who succeeded him, also discontinued the work. The simple meaning of the verse is: Even if you request half the kingdom from me, I will give it to you.”