"Then Peter, filled with the Holy Ghost, said unto them, Ye rulers of the people, and elders of Israel, If we this day be examined of the good deed done to the impotent man, by what means he is made whole; Be it known unto you all, and to all the people of Israel, that by the name of Jesus Christ of Nazareth, whom ye crucified, whom God raised from the dead, [even] by him doth this man stand here before you whole. This is the stone which was set at nought of you builders, which is become the head of the corner. Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved. Now when they saw the boldness of Peter and John, and perceived that they were unlearned and ignorant men, they marvelled; and they took knowledge of them, that they had been with Jesus. Acts 4:8-13
It is crucial to observe the transformation in Peter from the fearful individual who denied Jesus three times to the Peter now empowered by the Holy Spirit. He boldly confronts his accusers, accusing them of being responsible for Jesus' death. Peter fearlessly proclaims to these influential individuals, who doubt the possibility of the resurrection, that Jesus, whom they crucified, indeed rose from the dead. Moreover, he asserts that the miraculous power he wields, unmatched by anyone in their ranks, is derived from invoking the name of the crucified Jesus. Peter exhibits no fear of the consequences these worldly figures might impose on him. Furthermore, he points out that their attempts to punish him are for acts of kindness, not wrongdoing.
Peter and John did not receive formal education in rabbinical schools and were not trained in Old Testament theology. The Greek words indicate that they were considered "unlettered" and "common." They lacked technical knowledge of rabbinical teachings. They were common in the sense that they held no official positions or special abilities. However, the priests acknowledged that these men had spent time with Jesus, which accounted for their boldness and power. Unlike the Levitical tribe, they had not been instructed in rabbinical schools. This boldness in proclaiming the gospel was crucial, not only for the apostles then but also for present-day preachers. Those who receive this baptism, whether they are preachers or laypeople, are empowered to minister with greater boldness. This "boldness" this "Power" comes from being inundated or baptised in the Holy Spirit.
An effective preacher's beauty lies in their courage to communicate in plain, everyday language, ensuring that everyone comprehends the message. The Lord typically doesn't select highly educated individuals to convey the gospel's simple message. Highly educated individuals often seek concrete proof for everything. The Bible and its teachings, however, rely on faith. Faith and empirical evidence are contradictory. The Lord usually picks those with humble hearts whom He can instruct in His ways. Jesus personally taught these apostles, making it easier for them to believe without preconceived notions. Further along, in the Book of Acts, you'll find that "These same men, who have turned the world upside down have come here too." speaking of Paul and Silas.
Great word!!