For; or, therefore; for the following words contain either a reason why they were set over that business, or a recompence for it, or a provision that they might diligently attend to it. The king's commandment; either,
1. David s, who made this constitution. Or rather,
2. The kings of Persia, who is called simply the king in the next verse also; who took this care at the request and by the direction of Ezra or Nehemiah. Or this might be Nehemiah's command, which is called the king's command, because it was done by the king's deputy, or a commissioner whom the king empowered to do what he saw fit for the house and service of God, commanding all the people to obey him therein; as he had formerly done to Ezra, Ezra 7:18,20,23.