'Once' in the Bible

Also, I issue a decree as to what you are to do for these Jewish elders for the rebuilding of this house of God: the full cost is to be paid to these people from the royal treasury out of the taxes of the provinces west of the River, and that without delay.

“And I, Artaxerxes the king, issue a decree to all the treasurers in the provinces west of the [Euphrates] River, that whatever Ezra the priest, the scribe of the Law of the God of heaven, may require of you, it shall be done diligently and at once—

Every piece was counted and weighed, and all the weight was recorded at that time.

Shall we once again break your commandments and intermarry with these abominable peoples? Would you not be so angered by us that you would wipe us out, with no survivor or remnant?