When they (the rulers, the elders and the teachers of the law) saw the courage of Peter and John and realized that they were unschooled, ordinary men, they were astonished and they took note that these men had been with Jesus.
(Acts 4:13 NIV)
While the Bible was not explicit about it, we can believe that Peter and John were most certainly not blessed with exceptional intelligence (especially the former), nor were they bestowed with great courage, and from the above verses, it was evident they also received little or no education.
Not exactly the kind of people to be earmarked for greatness.
But despite their lack of natural apitudes, they “astonished” the Jewish religious leaders of their day with their mighty works and powerful preachings, bringing thousands in Jerusalem to Christ.
Then they suddenly had a revelation of sorts, remembering that the 2 “had been with Jesus”.
Indeed, when questioned by them, “By what power or what name did you do this?” Peter, the guy so often caught with his foot in his mouth, replied with conviction and boldness, “… It is by the name of Jesus Christ of Nazareth, whom you crucified but whom God raised from the dead..!!” (Acts 4:7-9)
But of course…