20 I was at a loss how to investigate such matters; so I asked if he would be willing to go to Jerusalem and stand trial there on these charges.

Read Acts 25:20 Using Other Translations

And because I doubted of such manner of questions, I asked him whether he would go to Jerusalem, and there be judged of these matters.
Being at a loss how to investigate these questions, I asked whether he wanted to go to Jerusalem and be tried there regarding them.
I was at a loss to know how to investigate these things, so I asked him whether he would be willing to stand trial on these charges in Jerusalem.