is one piece episode 155 filler?

Conis begins by explaining that since Skypiea is also known as God's Land, it is ruled by almighty God Enel. She further says that God Enel knows everything that goes on in the world by always watching them.

The Straw Hats are surprised when Conis tells them that God is watching them at the present time. Zoro comments on how he does not believe in the entity called - God and he holds nothing against those who believe.

Sanji asks Conis if she has ever seen the God and Conis replies saying that she has never seen the God because Upper Yard is forbidden to enter.