'Once' in the Bible

Now Simon's mother-in-law was lying down, suffering with a fever, and at once they told him about her.

And warning him sternly, he sent him away at once.

And other [seed] fell on the rocky ground where it did not have much soil, and it sprang up at once, because it did not have [any] depth of soil.

And if anyone says to you, 'Why are you doing this?' say 'The Lord has need of it, and will send it here again at once.'"