The second apparition is a bloody child that tells Macbeth no man born of a woman can hurt him.

The second apparition is a bloody child that tells Macbeth no man born of a woman can hurt him 

The third apparition of a crowned child tells Macbeth that he shall not be vanquished until Great Birnam wood shall go against him.

The fourth vision is of 8 Crowned Kings And the first being Banquo.