Did Jesus teach that Adam's sin affects the whole human race?
No. The teaching that Adam’s sin carries over into the whole human race was not taught by Jesus; He taught that all are sinners, but He did not tie it back to Adam. That revelation was given to Paul, who alone lays out this truth in Scripture.
Les explains that Paul, in verse 12, bridges information found nowhere else in Scripture. Jesus never mentioned it, and Les suggests the reason is that He was waiting for the revelations given to this apostle, Paul. Jesus did not teach, as far as Les is aware, the ramifications of Adam’s sin and how it carries over into the whole human race. Jesus certainly taught that all were sinners, but He did not tie it back into Adam like Paul does. Nowhere else in the Old Testament, as far as Les knows, is it taught; but here it comes and is laid out plainly.
More Questions
Why didn't Jesus teach that Adam's sin affects all of us?
Jesus did not mention the ramifications of Adam's sin for the human race because He intended to wait and reveal that truth through the apostle Paul.