'Diligently' in the Bible

Then Tattenai, governor of the province west of the [Euphrates] River, with Shethar-bozenai and their associates carried out the decree with due diligence, just as King Darius had sent and commanded.

Whatever is commanded by the God of heaven, let it be done diligently and with enthusiasm for the house of the God of heaven, so that there will not be wrath against the kingdom of the king and his sons.