'Investigated' in the Bible

After the matter had been fully investigated, Bigthan and Teresh were hanged on a pole, and this was recorded in the Book of the Chronicles in the presence of the king.

I, too, have carefully investigated everything from the beginning and have decided to write an orderly account for you, most excellent Theophilus,

Even the prophets, who prophesied about the grace that was to be yours, carefully researched and investigated this salvation.