Then he began to curse and to swear, saying, "For I do not know this man, about whom you are speaking.
Other versions
King James Version
But he began to curse and to swear, saying, I know not this man of whom ye speak.English Standard Version
But he began to invoke a curse on himself and to swear, "I do not know this man of whom you speak."New International Version
He began to call down curses on himself, and he swore to them, "I don't know this man you're talking about."