'Certainty' in the Bible

“Therefore let all the house of Israel know with certainty that God has made this Jesus, whom you crucified, both Lord and Messiah!”

And some cried one thing, some another, among the multitude: and when he could not know the certainty for the tumult, he commanded him to be carried into the castle.

On the morrow, because he would have known the certainty wherefore he was accused of the Jews, he loosed him from his bands, and commanded the chief priests and all their council to appear, and brought Paul down, and set him before them.

And, wishing to know with certainty the offense of which they were accusing him, I brought him down into their Sanhedrin,

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.