Read it through once

‘You are an intelligent and honest man, as one may see by your face. We conceive you to be poor and a stranger. Enclosed you will find a sum of money. It is lent to you for thirty days, without interest. Report at this house at the end of that time. I have a bet on you. If I win it you shall have any situation that is in my gift—any, that is, that you shall be able to prove yourself familiar with and competent to fill.’