Heresy

The Catholic thinks the Evangelical is a heretic, who thinks the Anglican is a heretic, who thinks the Orthodox is a heretic, who thinks the Baptist is a heretic, who thinks the Anabaptist is a heretic, who thinks the Pentecostal is a heretic, who thinks the Restorationist is a heretic, who think the Shias don't worship the one true God, who thinks the Ismaili is a heretic, who thinks the Wahabbi is a heretic, who thinks the Sunni is a heretic, who thinks the Orthodox Jew isn't worshipping Allah, who thinks the...

I could go on. We're all heretic, somehow.