'Ascertained' in the Bible

Thereupon Herod sent privately for the Magi and ascertained from them the exact time of the star's appearing.

Then Herod, finding that the Magi had trifled with him, was furious, and sent and massacred all the boys under two years of age, in Bethlehem and all its neighbourhood, according to the date he had so carefully ascertained from the Magi.

and having ascertained the fact he granted the body to Joseph.

But here he is, speaking openly and boldly, and they say nothing to him! Can the Rulers really have ascertained that this man is the Christ?

Some of the crowd shouted one accusation against Paul and some another, until, as the uproar made it impossible for the truth to be ascertained with certainty, the Tribune ordered him to be brought into the barracks.