And it came to pass, that when Jehudi had read three or four leaves, he cut it with the penknife, and cast it into the fire that was on the hearth, until all the roll was consumed in the fire that was on the hearth. When Jehudi had read three or four leaves - Rather columns; for the law, and the sacred Hebrew Books, are written in columns of a certain breadth. דלתות delathoth, signifies gates or openings between column and column, or between section and section.
He cut it with the penknife - בתער הספר bethaar hassopher, "the knife of the scribe," properly enough penknife.
And cast it into the fire - To show his contempt for God's words.