If Jesus was fully God, how could he ever have been a child? As a five year old, would he be omnipotent or be a five year old child?
In his human nature, he “grew and became strong, filled with wisdom; and the favor of God was upon him” and “advanced [in] wisdom and age and favor before God and man.” (Lk 2:40, 52). In his divine nature, he was fully God. Does this mean that, in His human nature, he always manifested all the knowledge and omnipotence of His divine nature? No: he “did not regard equality with God something to be grasped. Rather, he emptied himself, taking the form of a slave, coming in human likeness; and found human in appearance, he humbled himself.” (Philippians 2:6-8).
The closest we can come to an answer is that, when we see Jesus as an adult in the Scriptures, He knows His nature. We don’t know, precisely, how or when He first manifested that knowledge.
Would he get sick or misbehave like a normal child?
I’ve seen some assert that, since He was free of sin, Jesus would never get sick. That doesn’t seem to be a reasonable conclusion. If he was unable to be harmed physically, how could He have experienced death?
Did he misbehave? What would you call “staying at the temple and worrying your parents sick”?
Physically? Of course.
It doesn’t make sense that an omnipotent God could be a human child.
You’ve just grasped the miracle of the Incarnation. It “doesn’t make sense”, and yet, it is…
