Esthappan's miraculous acts like printing his own money and drinking whisky without getting drunk are narrated by people.
The character of Esthappan is always engaged in all sorts of things (in a moral way) to make people remind of Christ.
The fishermen community of the place works (different sorts of ‘acts’) so hard and so do all other men and women of the locality.
They lose the greatness of their effort (acts) through excessive drinking, gossiping, being promiscuous and through exploiting each other in many ways.
He is worried more about getting into the hearts of people where lay the real problem; the question of morality and conscience.