'Certain' in the Bible

And these were the people who went up from Tel-melah, Tel-harsha, Cherub, Addan, and Immer. But having no knowledge of their fathers' families or offspring, it was not certain that they were Israelites;

The king may be certain that when the building of this town and its walls is complete, they will give no tax or payment in goods or forced payments, and in the end it will be a cause of loss to the kings.

And I gave orders for a search to be made, and it is certain that in the past this town has made trouble for kings, and that outbursts against authority have taken place there.

Be certain to do this with all care: do not let trouble be increased to the king's damage.

So those who had come back did so. And Ezra the priest, with certain heads of families, by their fathers' families, all of them by their names, were marked out; and on the first day of the tenth month they took their places to go into the question with care.