Why were they casting their clothes at Saul's feet? It'd be easier to stone someone with less clothing on. They wouldn't be as warm and could move easier. The stones were not rocks, they were very large. The fulfillment of Acts 1:8 was done in Acts 8:1. The church as a whole, was scattered. Saul was going into people's houses and dragging them out of their homes forcibly and putting them into prison simply because they were Christians. God hates sorcery. Simon was using sorcery and therefore he was outside of God's will. He was so far out there that he had people thinking that he is the great power of God. Then Philip was preaching and they believe what he told them and were baptized, including Simon! Signed gifts were from God to show that God has chosen them to be the leadership authority of the New Testament Church. It was God's sign to the people that they could follow those men.