'Thereof' in the Bible

yet when it is sown, groweth up, and becometh greater than all the herbs, and putteth out great branches; so that the birds of the heaven can lodge under the shadow thereof.

And king Herod heard thereof ; for his name had become known: and he said, John the Baptizer is risen from the dead, and therefore do these powers work in him.

But when Herod heard thereof, he said, It is John, whom I beheaded: he is risen from the dead.

And when his disciples heard thereof , they came and took up his corpse, and laid it in a tomb.