'Certain' in the Bible

And he sent them to Beth-lehem and said, Go and make certain where the young child is; and when you have seen him, let me have news of it, so that I may come and give him worship.

And when Jesus was come into Capernaum, a certain captain came to him with a request,

But if he will not give ear to you, take with you one or two more, that by the lips of two or three witnesses every word may be made certain.

And certain Pharisees came to him, testing him, and saying, Is it right for a man to put away his wife for every cause?

The kingdom of heaven is like a certain king, who made a feast when his son was married,

Now take an example from the fig-tree: when her branch has become soft and puts out its leaves, you are certain that the summer is near;

Even so, when you see all these things, you may be certain that he is near, even at the doors.

But be certain of this, that if the master of the house had had knowledge of the time when the thief was coming, he would have been watching, and would not have let his house be broken into.

Keep watch, then, because you are not certain of the day or of the hour.