When he graduated, he joined his father in a window - cleaning business so that he could pursue his chosen vocation as a full - time evangelizer, or pioneer.
इसलिए जब वह ग्रेजुएट हुआ, तो वह अपने पिता के साथ खिड़कियाँ साफ करने के काम में लग गया, ताकि पायनियर सेवा कर सके ।