Matthew Poole and continuators on Acts 24:9

9 And the Jews, also assented, saying, That these things were so.

The high Priest and the rest of the Senate that came with him, acknowledged (as the manner was) that Tertullus had spoken their sense, and what they had to say; and some think that this their assent went further, and that they offered themselves as witnesses to the truth of what he had said.