Religion

God: In the world of One Piece it is unknown whatever such entity exists, yet there is many religious refrance scattered across the series. In Skypiea, this title refers to a ruling body of sky islands, instead of any kings or other form of government. This person however is not a real God but a physical being who is not all powerful and not perfect, the God acts as king. Smoking God was the oldest known God 400 years ago. Gan Fall was a God 6 years ago before Eneru took over. Eneru took this title seriously, believing to be an all-powerful God only to be beaten up by Luffy. After Eneru was gone, Gun Fall retook the title.

Does God exist in One Piece?
Sanji made many reference of God, he once asked Zoro if he believes in God, Zoro did not answer because he may not believe in God. Again after defeating Jyabura, Sanji mentioned God.

However, Conis questions if whatever or not does God exist, she then shouts out Help us, God!!.

Bartholomew Kuma has a Bible in his hands and always carries it with him. Mihawk also has weapons modeled after crucifixes, so the Shichibukai might be a Holy organization, considering the fact that the privateers they are modeled after were also a very Holy people.