'Certain' in the Bible

The king replied, “I know for certain that you are bargaining for time, inasmuch as you have seen that the command from me is firm,

For this reason at that time certain Chaldeans came forward and brought charges against the Jews.

There are certain Jews whom you have appointed over the administration of the province of Babylon, namely Shadrach, Meshach and Abed-nego. These men, O king, have disregarded you; they do not serve your gods or worship the golden image which you have set up.”

He commanded certain valiant warriors who were in his army to tie up Shadrach, Meshach and Abed-nego in order to cast them into the furnace of blazing fire.

I lifted my eyes and looked, and behold, there was a certain man dressed in linen, whose waist was girded with a belt of pure gold of Uphaz.