I believe Gods' salvation has been confirmed, firmly established, settled because of His word. It says in Psalm 119:89-90 Forever Oh Lord they Word is settled. Your faithfulness extends to all generations. The church of Acts is the pattern for the New Testament church. In the church of Acts there are signs, and wonders, gifts and miracles. Signs and wonders reveal Gods approval upon His ministry. Acts 2:22 says Men of Israel hear these words Jesus of Nazareth a man attested by God to you by miracles, wonders, and signs which God did through Him in your midst. It is God who does the Wonders. We need to be willing and obedient for Him to work through us. They prove Gods faithfulness, love and care towards us. We should respond to Jesus with a sense of awe. His works change our lives through His power. I believe God can use anything to point people to Him. He even used a donkey but He gets great delight when we are willing vessels. I believe He annoints those who realize they can't make it without His help and hand on their life. The purpose is always to point poeple to Jesus for salvation until His kingdom is established on earth. Also, these gifts are used to edify the church. I Corinthians 14:1 says Pursue love and desire spiritual gifts. We need to earnestly desire these things in our lives. It doesn't say anywhere that gifts have ceased. Miracles point to who Jesus is. God has a heart for people and wants to work in their midst. Mark 16:19-20 says so then after the Lord had spoken to them He was received up into Heaven and sat down at the right hand of God. And they went out and preached everywhere the Lord working with them and confirming the Word through the accompanying signs.