This ties in with 1 Corinthians 15:8
If Jesus was a priest after the order of Melchizedek, who existed 400 years before the law, and not of the priesthood of Aaron, then how could Jesus be born under the law. The law was overtime a result of Adams sin and the entire world is guilty before GOD . Romans 3:19 The reason for the virgin birth was to separate the Christ from the line of Adam thus making Jesus the second Adam, Jesus was not of this world, this creation. Jesus was born of a woman who was born under the law and yes during the very early years of the life of Jesus his parents brought him up accordingly, however this was not the choice of Jesus when he was old enough to choose he demonstrated the love of his GOD was the fulfillment of the law. Jesus did not need to abolish the law because he provided a different covenant not based upon law but on love, grace and faith.