'Knewest' in the Bible

He saith unto him, Out of thine own mouth will I judge thee, thou wicked servant. Thou knewest that I am an austere man, taking up that which I laid not down, and reaping that which I did not sow;

and shall dash thee to the ground, and thy children within thee; and they shall not leave in thee one stone upon another; because thou knewest not the time of thy visitation.