I'm guessing here that you have offered to be helpful and let him stay with you for a relatively long time - perhaps weeks or even a few months - to support his work locally? You did not pre-agree an arrangement as he was invited as a guest, but you assumed that as a guest, he would not want to take advantage and would, for example, help with cooking/cleaning, offer to do chores, perhaps do some free babysitting etc etc.
.... and now you're finding that this is, in fact, not the case?
Unfortunately, this is not uncommon with guests, with men or with christians.
The only answer is to have the conversation.
It's not quite the same but we had something a little similar with a young relative who stayed with us for a few months a couple of years ago as a stopgap. He was a lovely young man but just didn't THINK. So I decided to treat him as I would one of my children of a similar age.... I'd call him down to help me set the table/make dinner, ask him to pop to the shop to pick up bread/milk etc, ask if he could look after my DC for an hour and so on. And to his credit, he never once complained or had any issue. He just didn't have a single proactive bone in his body!