'Certain' in the Bible

Thou, O king, wast looking, and lo, a certain great image. This image is mighty, and its brightness excellent; it is standing over-against thee, and its appearance is terrible.

Therefore at that time drawn near have certain Chaldeans, and accused the Jews;

There are certain Jews whom thou hast appointed over the work of the province of Babylon -- Shadrach, Meshach, and Abed-Nego, these men have not made of thee, O king, any regard; thy gods they are not serving, and to the golden image thou hast raised up -- are not making obeisance.'

and to certain mighty men who are in his force he hath said to bind Shadrach, Meshach, and Abed-Nego, to cast into the burning fiery furnace.

then they have come near, yea, they are saying before the king concerning the king's interdict: 'Hast thou not signed an interdict, that any man who seeketh from any god and man until thirty days, save of thee, O king, is cast into a den of lions?' Answered hath the king, and said, 'The thing is certain as a law of Media and Persia, that doth not pass away.'

And I lift up mine eyes, and look, and lo, a certain ram is standing before the stream, and it hath two horns, and the two horns are high; and the one is higher than the other, and the high one is coming up last.

And I hear a certain holy one speaking, and a certain holy one saith to the wonderful numberer who is speaking: Till when is the vision of the continual sacrifice, and of the transgression, an astonishment, to make both sanctuary and host a treading down?

and I lift up mine eyes, and look, and lo, a certain one clothed in linen, and his loins girt with pure gold of Uphaz,