Religion

So where I live there's this guy I know who is a preacher. Know the weird thing about him is that he preaches alone with a speaker,rarely ask for alms and he preaches even at night alone. No one gives him any attention but he keeps on doing it despite it. His speech isn't great you could even see that his clothes are somehow worn out but his passion is something else.

My question is what could really motivate a person so much to live this way and keep this in mind that he's been doing this for years.

I'm sure if anyone was told to leave their dreams and aspirations of life to preach especially us christians we would find it hard.