'Certain' in the Bible

for what, if certain were faithless? shall their faithlessness the faithfulness of god make useless?

and not, as we are evil spoken of, and as certain affirm us to say -- 'We may do the evil things, that the good ones may come?' whose judgment is righteous.

And if certain of the branches were broken off, and thou, being a wild olive tree, wast graffed in among them, and a fellow-partaker of the root and of the fatness of the olive tree didst become --

for it pleased Macedonia and Achaia well to make a certain contribution for the poor of the saints who are in Jerusalem;