Acts 2:37-38
Now when the people heard this message [of Peter and the other apostles, See verse 14], they were convicted [of its truth] in their hearts and said to Peter and the other apostles, "Brothers, what shall we do [about our condemned condition]?"
Acts 17:19-20
So, they led him to the Areopagus [i.e., an elevated assembly place called "the Hill of Mars"] and asked him, "Could we learn [more] about this new teaching you are speaking of?
Acts 17:30-32
Now God made allowance for the times when people were still uninformed [about His complete will], but now [in the Gospel age] He requires all people everywhere to repent [i.e., change their hearts and lives].