Matthew 13:57 And they took offense at him. But Jesus said to them, “A prophet is not without honour except in his own town and in his own home.”
Jesus did not go to bible college to learn the stuff He knew – it came from God Himself.
The people around Him could see the wisdom was there but struggled to see where it could come from without earthly intervention.
Let us not be stuck in the same position of doubting God just because we cannot explain things in earthly terms – God is not of this earth, He created it!