Muffled street evangelists

Today in the city i saw a street evangelist.

I say i saw, because i didn't exactly hear.

He was on front of the QVB, atop his milk crate, Bible in hand, saying something. His microphone was pretty dodgy, so you couldn't understand what exactly he was saying.

I wondered, if no-one can hear you, what's the point?

Whilst standing at the traffic lights i think i heard him saying something along the lines of "do you consider yourself a good person..." I understand this evangelistic tract works wonders.