He Was A Conservative, Not A Radical
One of the greatest ironies of the political / religious world today is that most of the western Christian-professing nations, because of their Christianity, politically and militarily support Israel, while most of the people of that Jewish State of Israel (from the 1948 Declaration of Israel's Independence, "we hereby proclaim the establishment of the Jewish State in Palestine, to be called Israel") not only reject Christianity, but many hold it in absolute contempt. That's not to say that the "Christian" nations who support Israel shouldn't do so, they most certainly should (for the sake of believers, not unbelievers), but many Christian-professing people are often very shocked whenever they hear what many people there actually think of, and blasphemously say about, Jesus of Nazareth.
An even greater irony of that though is that Jesus Christ was in fact an "ultra-conservative," or even "ultra-orthodox," when it came to the Holy Scriptures, and His absolutely-perfect adherence to them, and yet He is regarded, by millions of Jews and Christian-professing people alike, as someone who rejected it all and started a new religion called Christianity. Nothing could be farther from the Truth.
"Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil"
Jesus Christ was no radical. He was in fact far more conservative than those who were viewed as the religious conservatives of His day - the people who had Him killed because He taught the Truth. Jesus of Nazareth didn't come to do away with the religion of His own people. He came to fulfill what they were all waiting for.
"Think not that I am come to destroy the Law, or the prophets: I am not come to destroy, but to fulfil. For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the Law [see The Decalogue], till all be fulfilled."
"Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven. For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven." (Matthew 5:17-20 KJV)
Jesus Christ was a very conservative Jew, racially and religiously, throughout His entire human lifetime (the photograph shows what remains of the Synagogue at Capernaum that Jesus attended i.e. Luke 4:31-32), although the Truth that He spoke was not always welcomed.
"And He taught in their synagogues, being glorified of all."
"And He came to Nazareth, where He had been brought up: and, as His custom was, He went into the synagogue on the Sabbath day, and stood up for to read."
"And there was delivered unto Him the book of the prophet Esaias. And when He had opened the book, He found the place where it was written, The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor; he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised, To preach the acceptable year of the Lord."
"And He closed the book, and He gave it again to the minister, and sat down. And the eyes of all them that were in the synagogue were fastened on Him."
"And He began to say unto them, This day is this Scripture fulfilled in your ears." (Luke 4:15-21 KJV)
Fact Finder: Was baptism just some sort of new "Christian" practice, or was John, a Levite/Jew, carrying on a practice well-known to Jews?
See The Origin of Baptism; also Old Testament Baptisms