He was speaking as a man who had limited himself and his infinite knowledge
at that specific time. At other times he used his omniscience.
The same is true with his omnipotence. He refrained from using his almighty power when going to the cross. He could have called 12 legions of angels but he didn't.
Yet, throughout his ministry, he calmed the raging sea, walked on water, changed water into wine, and raised Lazarus from the dead. This was a great display of his omnipotence. He didn't use this power all the time, only some of the time.
He didn't use his omniscience all of the time only some of the time.
Why was he able to answer all the questions of the Rabbis in the Temple at the age of 12? His parents had not taught him all of that knowledge.
He relied on his Divine knowledge, his omniscience.[/QUOTE]
I am "assuming" that you are formulating this idea based on a portion of Matthew 2:40? Is that what it says? Is that how it should be explicitly interpreted? Perhaps there are other scripture that you base it upon?
It has always been a perplexing thought paraphrased into today's lingo.
What did Jesus know and when did he know it?
I think you mean Luke 2:40; there are not 40 verses in Mat.2.
Luke 2:40 And the child grew, and waxed strong in spirit, filled with wisdom: and the grace of God was upon him.
--We know little about the early life of Christ. This is one good verse. "Filled with wisdom and the grace of God was upon him."
Even at the age of twelve, as they go and come from Jerusalem, Jesus is referred to as a child (2:43) "and the child remained behind."
Luke 2:46 And it came to pass, that after three days they found him in the temple, sitting in the midst of the doctors, both hearing them, and asking them questions.
--These were the Rabbis like Saul and Nicodemus, and presumably other members of the Sanhedrin. He was not only hearing but asking them questions.
Luke 2:47 And all that heard him were astonished at his understanding and answers.
--This was not normal. They hadn't seen this before. They were amazed at his understanding of Scripture and spiritual insight. Where did that come from. If he were fully man he could not have simply answered in that manner. He had to answer because he was deity, because he had revelation directly from God the Father. I believe his own remarks reinforce this.
Luke 2:49 And he said unto them,
How is it that ye sought me? wist ye not that I must be about my Father's business?
--Don't you know that I should be about my Father's business. He was about His Father's business. He was receiving divine revelation and giving that revelation to others--instructing them in the ways of the Lord.
The next verse indicates that even his parents didn't understand him.
Luke 2:50 And they understood not the saying which he spake unto them.
--It seems inconceivable from our point of view, given all the revelation that Mary had already received, that she would not have understood his words or what he was doing.
Even when Christ was much older, after his baptism, the general public still only considered him "the son of a carpenter," and nothing much more than that.
Matthew 13:54 And when he was come into his own country, he taught them in their synagogue, insomuch that they were astonished, and said, Whence hath this
man this wisdom, and
these mighty works?
55 Is not this the carpenter's son? is not his mother called Mary? and his brethren, James, and Joses, and Simon, and Judas?
56 And his sisters, are they not all with us? Whence then hath this
man all these things?
--They were amazed at his wisdom, his miracles, but only knew him as Joseph's son, the carpenter's son. His wisdom and miracles came from God, because he was God. Only God could do the miracles he did. It is not enough to say: "The apostles could do miracles too."
The miracles Christ did could not be replicated by anyone, not even the apostles. The Apostles could not walk on water. They could not calm the sea. And especially they could not raise one from the dead such as Lazarus who had been dead and buried for a number of days. There were certain miracles that Jesus did that demonstrated his deity. Not even his disciples could replicate them. He was God.