‘And the multitudes gave heed with one accord to the things which were spoken by Philip, when they heard, and saw the signs which he did. For from many of those who had unclean spirits, they came out, crying with a loud voice, and many who were palsied, and who were lame, were healed.'
His message was supported with signs and wonders beyond anything that they had seen before. Unclean spirits were cast out, and paralysed and lame people were healed. This went beyond anything that Simon could do. Thus they took notice also of Philip's message, and responded to it.