The religious leaders faced a healing that blew their arguments out of the water. They had to confront a reality they couldn't ignore.
The council, including the high priest, found themselves in a bind. Peter and John had just healed a man lame from birth, right before their eyes. The text says, "a notable sign has been performed through them is evident to all the inhabitants of Jerusalem, and we cannot deny it."
This wasn't just some private event; it was public, undeniable, and significant – a "notable sign." The leaders knew that trying to dispute the healing would be foolish because everyone knew the man had been lame his whole life and was now walking. Their own eyes, and the testimony of the entire city, confirmed the miracle. They were trapped by the evidence, forced to acknowledge God's power even as they resisted His messengers.