John Gill Commentary Acts 25:22

"And Agrippa [said] unto Festus, I also could wish to hear the man myself. To-morrow, saith he, thou shalt hear him." — Acts 25:22 (ASV)

Then Agrippa said to Festus
After he had given him the above account:

I would also hear the man myself ;
Agrippa being a Jew by profession, and knowing more of these things than Festus did, and very likely had heard much concerning Jesus Christ; and if not of the apostle, yet however of the Christian religion; and therefore he was very desirous, not only out of curiosity to see the man, but to hear him; and get some further information and knowledge about the things in dispute, between the Jews and Christians, in which Festus was very ready to gratify him:

tomorrow, said he, you shall hear him :
and sooner things could not well be prepared for an affair of this kind, and for so grand a meeting.