'Namely' in the Bible

Letters were sent by the runners to all the king's provinces stating that they should destroy, kill, and annihilate all the Jews, from youth to elderly, both women and children, on a particular day, namely the thirteenth day of the twelfth month (that is, the month of Adar), and to loot and plunder their possessions.

This was to take place on a certain day throughout all the provinces of King Ahasuerus -- namely, on the thirteenth day of the twelfth month (that is, the month of Adar).