The resounding cry of freedom in the Bible is, “Do not be conformed to this world, but be transformed by the renewal of your mind” (Romans 12:2). In other words, be free! Don’t be duped by the gurus of the age. They are here today and gone tomorrow. One enslaving fad follows another. Thirty years from now today’s tattoos will not be marks of freedom, but incredible reminders of conformity.
– John Piper