I know very little about Michael Bublé. However, I find it interesting that he is reported as having said: "Luisiana [his wife] and I will devote all our time and attention to help Noah to get better, for now suspending our professional activities. During this difficult time, we ask you to pray for him and please respect our privacy. We have a long road ahead and we hope that with the support of our family, friends, fans around the world and our faith in God, we can win this battle."
We live in a fallen world. It's a world in which sin has taken, and continues to take, a terrible toll. However, it is still, as the song proclaims, "my Father's world". His love for you and for me was, and is, such that He did take our place - in the Persona (not a typo - see my book "Great Words of the Faith"; details above!) of the Son Who paid the penalty for our sin so that we might go free. As I put it to a group of English-speakers here in France, just a week or so ago: "He made the Son of His love (His 'only-begotten' Son) to be the object of His wrath, so that the objects of His wrath (you and me) might become the sons of His love!" That goes way beyond taking medical treatment for a dearly-loved child!