Christians, believe that Jesus, being the Son of God, had the same powers as God. Certainly he could do any miracle that pleased him.
The Truth Is
Jesus could not always do mighty works. He was unable to do any mighty works when he was around people that knew him when… Those “people” would be those people who knew him best…his four brothers and two sisters.
Is not this the carpenter, the son of Mary, the brother of James, and Joses, and of Juda, and Simon? and are not his sisters here with us? And they were offended at him.
But Jesus, said unto them, A prophet is not without honour, but in his own country, and among his own kin, and in his own house.
And he could there do no mighty work, save that he laid his hands upon a few sick folk, and healed them.
And, almost word for word from Mark, repeated by Matthew 13:55-57
Is not this the carpenter’s son? is not his mother called Mary? and his brethren, James, and Joses, and Simon, and Judas?
And his sisters, are they not all with us? Whence then hath this man all these things?And they were offended in him. But Jesus said unto them, A prophet is not without honour, save in his own country, and in his own house.
And he did not many mighty works there because of their unbelief. Matthew 13:55-57
So, the people who one would most likely be able to vouch for Jesus, cannot do so. Surely Mary told his sibling about the miraculous events surrounding the birth of their eldest brother? Surely they witnessed how remarkable he was while they were growing up.