True miracles occurred with Jesus and the apostles ministries as proof of the gospel message.
As one pharisee put it, “Rabbi, we know you are a teacher who has come from God. For no one could perform the miraculous signs you are doing if God were not with him“.
Today, the message preached is often distorted by centuries of false doctrine and tradition. This is part of the prophesied ‘Great Falling Away’, but realise this as a salvation issue, but that today, the message many preach is unrecognizable to Heaven. So does this explain why we do not see many miracles today? After all, God being just, would never confirm or support false teaching or a false gospel with miracles lest the people believe the false message by reason of a God approved miracle.
Sure, God can still heal and he does. But when a big wig evangelist healer comes to town with a teaching based on a subject like the Trinity and other popular false teachings, then there is a good possibility that no sign will be given by God. Instead, if we go back to the basics and steer clear of the metaphysical gospel of ontology, the message that God actually died, or that God became a man, and preach the truth about God and his Son instead, then maybe then signs from God will approve the message because it extends the Kingdom of God.
God actually desires that we be healed and doesn’t want any to perish. He also wants to demonstrate his power when the truth is shining to help people believe the truth. So what would the point of God physically healing someone at the hands of someone whose message is leading people astray or is enforcing false doctrine. God would be a party to helping people become deceived and of course that would never happen.
Mark 9:43-48
If your hand causes you to stumble, cut it off. It is better for you to enter life maimed than with two hands to go into hell, where the fire never goes out. And if your foot causes you to stumble, cut it off. It is better for you to enter life crippled than to have two feet and be thrown into hell. And if your eye causes you to stumble, pluck it out. It is better for you to enter the kingdom of God with one eye than to have two eyes and be thrown into hell,
As you can see, God considers it better to be maimed and enter life, than be whole and be cast into hell. So the most important thing is we believe and teach the truth of God and following that is is healing which enforces the truth.