Syria
By being Jesus, the Son of God.
If you are asking about Jesus healing a boy? In the B.C years as medicene was not so well developed as today. They used to blame the e vil spirits were in that boy , when actually he was suffering from epilepsy and had a convulsion And Jesus healed the boy.
He's Jesus he can heal anything you need.
First do no harm
"First Do No Harm".
Jesus healed the people who asked him to heal them, and as long as they asked in faith , they were healed at once.
Yes, Jesus has unlimited power and there are at least three examples of people rising from the dead, Lazarus, the boy on his way in the funeral procession, and Himself. Many people are witnesses to this.
Bartimaeus
The power God gave him.
From His Father.
No Jesus was not a politision but was a religious teacher come to save and heal the people.
Because he believed that that messiah Jesus could heal.