John Calvin Commentary Acts 26:31

"and when they had withdrawn, they spake one to another, saying, This man doeth nothing worthy of death or of bonds." — Acts 26:31 (ASV)

They spoke together. Since Paul was acquitted by the judgment of them all, it brought great renown to the gospel.

And when Festus agrees with the rest, he condemns himself, since he had brought Paul into such straits through his unjust dealing, by endangering his life under the pretext of changing the trial's location.

And though it seems that the appeal hindered the holy man, yet because this was the only way to escape death, he is content and does not seek to get out of that snare. This was not only because the matter was still not safe and sound, but also because he had been admonished in the vision that he was also called by God to Rome (Acts 23:11).