Yes, of course they are. It is up to people to repent. God allows us our freedom, and sometimes people do reject God. Many Martyr Saints of The Church were tortured and killed several times by certain earthly rulers, but God miraculously put them back together, as if they had not been touched at all -- still, those rulers did not repent. It's not they did not believe, since those miracles were undeniable, but they did not want to repent.