Jesus WAS an observant Jew.  So were all of his first disciples---men and women.  After Pentecost, Peter and the other Apostles continued to pray and worship in the Temple area.

NO, on this earth, Jesus did not know everything---language, math, history, and politics.  NO TRUE HUMAN DOES.  You are skirting an early church heresy that believed that Jesus was not completely human.  

You write about humility, but you forgot Jesus.  He completely divested himself and "although he was God, he did not deem equality with God something to be grasped at."