False assumption there, BA. There is no good reason to assume that if UR is true, Jesus must have taught it everywhere in the Gospels. In fact, I deny that he was trying to get anyone to believe UR during his earthly ministry. I don’t think the hope of UR began to be proclaimed by as a truth to be believed until after Christ’s death, resurrection and ascension.
Now, here’s something for you to ponder, BA. Whether you believe in UR or not, it makes much more sense to think that the full revelation and proclamation of such a truth could be postponed by a loving God until a later time in redemptive history, since no one’s endless, post-mortem destiny could be jeopardized from their not believing it. However, if sinners have always been exposed to the possibility of being condemned to an irreversible state of endless suffering after death, and man’s avoidance of this nightmarish fate has always been conditioned on something he must do before he dies, then one would expect that a loving God would have made this unquestionably clear to all men, and warned them continuously of what was in store for them did they not repent - not merely in Jesus’ day, but from the moment man first sinned. But is this what we find? Not even close. There is not so much as a hint dropped that anyone, by their sin, had exposed themselves to an irreversible post-mortem punishment of endless duration. Both the OT and the NT are completely silent on this.