Signs and wonders have not passed away as the Cessationists would have you to believe, but they are frequently mentioned in the Word of God and they are not without purpose.
The spiritual world is real. It is an unseen realm of angels, demons, and the great cloud of witnesses, and this realm at times will break in to the natural, physical realm.
It is good to go to the Word of God and see what it has to say about signs and wonders and to put them in the right context.
One of the main purposes of signs and wonders in the New Testament is that they were given by the Lord to confirm the preaching of the gospel.
Signs and wonders were also given as a testimony of Jesus Christ, that He is the Son of God.
Many of the signs and wonders were in the form of healings, miracles, and deliverance of those that were oppressed by demons.
We see signs and wonders occurring with frequency in third world countries to bring multitudes of people to a saving knowledge of Jesus Christ.
Signs and wonders should accompany believers as seen in Mark 16: 17, 18.
The enemy can also produce lying signs and wonders and the difference is that true signs and wonders will always testify of Jesus and the Word of God, and the false signs and wonders become an end in themselves, and men that will seek them will be drawn away from the Lord, and often the focus and attention will be on some man or woman in whom the signs and wonders are being manifested.
Mark 16:19-20, KJV So then after the Lord had spoken unto them, he was received up into heaven, and sat on the right hand of God. And they went forth, and preached every where, the Lord working with them, and confirming the word with signs following.
Hebrews 2:3-4 How shall we escape if we ignore so great a salvation? This salvation, which was first announced by the Lord, was confirmed to us by those who heard him. God also testified to it by signs, wonders and various miracles, and by gifts of the Holy Spirit distributed according to his will.
John 2:11 What Jesus did here in Cana of Galilee was the first of the signs through which he revealed his glory; and his disciples believed in him.
Acts 3:6-10; 4:4 Then Peter said, "Silver or gold I do not have, but what I do have I give you. In the name of Jesus Christ of Nazareth, walk.” Taking him by the right hand, he helped him up, and instantly the man’s feet and ankles became strong. He jumped to his feet and began to walk. Then he went with them into the temple courts, walking and jumping, and praising God. When all the people saw him walking and praising God, they recognized him as the same man who used to sit begging at the temple gate called Beautiful, and they were filled with wonder and amazement at what had happened to him... [4:] But many who heard the message believed; so the number of men who believed grew to about five thousand.
Acts 5:12-16 The apostles performed many signs and wonders among the people. And all the believers used to meet together in Solomon’s Colonnade. No one else dared join them, even though they were highly regarded by the people. Nevertheless, more and more men and women believed in the Lord and were added to their number. As a result, people brought the sick into the streets and laid them on beds and mats so that at least Peter’s shadow might fall on some of them as he passed by. Crowds gathered also from the towns around Jerusalem, bringing their sick and those tormented by impure spirits, and all of them were healed.
Acts 8:5-7, 9, 13 Philip went down to a city in Samaria and proclaimed the Messiah there. When the crowds heard Philip and saw the signs he performed, they all paid close attention to what he said. For with shrieks, impure spirits came out of many, and many who were paralyzed or lame were healed... [9] Now for some time a man named Simon had practiced sorcery in the city and amazed all the people of Samaria. He boasted that he was someone great.... [13] Simon himself believed and was baptized. And he followed Philip everywhere, astonished by the great signs and miracles he saw.
1 Corinthians 2:4-5 My message and my preaching were not with wise and persuasive words, but with a demonstration of the Spirit’s power, so that your faith might not rest on human wisdom, but on God’s power.
Mark 16:17-18 And these signs will accompany those who believe: In my name they will drive out demons; they will speak in new tongues; they will pick up snakes with their hands; and when they drink deadly poison, it will not hurt them at all; they will place their hands on sick people, and they will get well.