how was it demonstrated for you when you believed?
what does it look like when the miracle of a sinner is translated into the Kingdom of God?
do we need miracles to believe or continue in faith?
Why do you feel like you need to see a miracle before you will believe that the Spirit gives gifts like the working of miracles to believers in the body of Christ? I find some of your comments ironic in this regard.
God is not obligated to do miracles. Jesus told one man, "Except ye see signs and wonders, ye will not believe." Then He healed the nobleman's son, and the nobleman believed. So Jesus was willing to do miracles on certain occasions, even for people who would only believe if they saw signs.
The proconsul Sergius Paulus believed after he saw Elymas blinded. Some people don't believe until they see something. I don't know if the proconsul would have believed if he'd just heard, but in this case he believed after he saw that happen.
Thomas said he wouldn't believe that Jesus rose unless he put his fingers in the holes in His hands and his hand into Jesus' side. Look at what Jesus told him as recorded in John 20.
27 Then He said to Thomas, “Reach your finger here, and look at My hands; and reach your hand here, and put it into My side. Do not be unbelieving, but believing.”
28 And Thomas answered and said to Him, “My Lord and my God!”
29 Jesus said to him, “Thomas, because you have seen Me, you have believed. Blessed are those who have not seen and yet have believed.”
Thomas would have had a blessing if he'd believed before seeing the resurrected Christ. But Jesus was merciful and wanted Him to believe. God doesn't owe sinners miracles. He may choose to show mercy. And there are times it is appropriate to pray for God to do signs and wonders for the sake of those who hear the message.
Here is an apostolic example for us right here.
Acts 4
29 Now, Lord, look on their threats, and grant to Your servants that with all boldness they may speak Your word, 30 by stretching out Your hand to heal, and that signs and wonders may be done through the name of Your holy Servant Jesus.”
(NKJV)