'Certainty' in the Bible

that thou mightest know the certainty of those things in which thou hast been instructed.

And different persons cried some different thing in the crowd. But he, not being able to know the certainty on account of the uproar, commanded him to be brought into the fortress.

And on the morrow, desirous to know the certainty of the matter why he was accused of the Jews, he loosed him, and commanded the chief priests and all the council to meet, and having brought Paul down set him before them.

having commanded his accusers to come to thee; of whom thou canst thyself, in examining him, know the certainty of all these things of which we accuse him.