Jesus is presented to have been a Torah observant Jew in some accounts in the synoptic gospels, however...he may have modified some Jewish laws or re-interpreted them to mean something else, besides discounting some of them altogether. This is a matter of debate, since there are other accounts or versions of Jesus out there, among them being from the Essene and Gnostic schools. There are also versions of Jesus from other accounts, such as the Aquarian Gospel of Jesus the Christ, the Urantia Book record, the Talmud of Jmmanuel and others. Some believe Paul's letters do NOT agree with Jesus teaching and his keeping the Jewish law and customs, since he teaches a new gospel (his own) which is a gospel of grace, thru FAITH. - Gentile believers in Jesus were also NOT required to follow the entirety of the Torah or its customs,....do you recall the Jerusalem Council in the book of Acts???? -
there is still the controversy or debate upon if Gentile converts or followers of Jesus are to be circumcised and follow the Jewish law and customs as Orthodox Jews do. Are you aware of this?
He claimed to be one, but we cant be wholly sure of this beyond his own claims, just as much as he claimed to have been called to be an apostle by Jesus. He however taught a different/new gospel, by his own personal revelations and appears to discount the Torah in his writings. How do you explain the seeming anti-Torah teachings in Paul's letters?
See Bet Emet Ministries resource on Paul
here