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. (NIV)
And I, being puzzled to know how to make inquiries into such questions, asked whether he would be willing to go to Jerusalem and there be tried regarding them. (AMP)
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. (KJV)