‘And he said to his mother, “The eleven hundred pieces of silver which were taken from you, about which you uttered a curse, and also spoke of to me, behold, the silver is with me. I took it.”
His story begins with his admission that he was a thief. It would seem that he was moved to confess by the fact that she had put a curse on the silver, so that in order to avoid the curse he admitted his wrongdoing and returned the silver. His mother was clearly an old woman for Micah himself was a father of grown up sons. It speaks volumes of Micah that he felt able to steal from his aged mother. ‘Spoke to me' may suggest that she had also adjured him under the curse to tell the truth.
‘And his mother said, “Blessed be you of Yahweh, my son.” '
On his owning up his mother reversed the curse, turning it into a blessing.