My two cents.
The Redeemer had to be of the same type as those He redeemed. Human. But He was not created, was not born of the seed of Adam, therefore did not have a sin nature as we do, but had the moral or natural ability to sin just as Adam did at creation.
To be one of us in all other respects, to be tempted a we are, it was necessary for Him to come through woman "the Seed of the woman will crush your head,"and grow from a baby into adulthood as we do. He paralleled us.
He did not get old. There is no record of Him ever being sick or injured. He did not deteriorate. He felt the same things we do hunger, thirst, tiredness, grief, etc. but it does not indicate in scriptures that He ever was incapacitated by aging. He bore no marks of sin, until He went to the cross, and there He took them full force, not for Himself and not because of Himself, but for us in our stead, and because of us.