Mr Duterte said he had promised God he would not "express slang, cuss words and everything", and said a "promise to God is a promise to the Filipino people".
Prezidents paziņoja, ka apsolījis dievam vairs "nelietot žargonu, lāstus un pārējo", piebilstot, ka "solījums dievam ir solījums Filipīnu tautai".