And he said I should managed the investment for him and I told him that he should used one of his trusted children but I can only be a mentor, guidance and adviser to him and not to manage the investment for him. And I will introduce the DCA method of investment for him since he depends on the monthly stipend of the church. My problem here is, the time he is planning for his retirement investment is too close. It is just few months to his retirement and that is when he is serious about it. What was his plan for all these years in active service?
As it is, we have scheduled another meeting this Sunday again after the Sunday service. And if he is serious I will invest for him but I prefer the long term but as a age man, really he needs an investment that can brings feed to his table daily and that is why he was insisting on the short term investment buy that cannot do him anything base on the volatile nature of Bitcoin.
I think you're getting involved in a situation which is potentially way bigger than you: first the requests of this guy are, in my opinion, nonsense: why would you trust someone managing all your money? And he wants short term gains with bitcoin? That is not how it works unless you are willing to take some very big risk.
Also don't forget that if he's a pastor for sure he knows a lot of people, if you mess up somehow the fault will always be yours, and he could start badmouthing you with all the people he knows. If I were you I would explain some basic stuff, tell him to discuss with his sons and good luck. Don't get more involved than that.