The Bible itself speaks of a cut-off period for the miracles that Jesus and his apostles performed. They were never supposed to be a permanent arrangement, but merely a demonstration on a small scale of the blessings of the Kingdom to come.
Paul spoke of the need for miracles as something that spiritual 'infants' needed to see and respond to. Miracles were performed by Moses and other prophets in the OT. But Jesus gave his disciples the ability to perform miracles initially by the use of his name.
After his death and resurrection, the holy spirit empowered the disciples to speak in different languages, to heal the sick, and even to raise the dead. But Paul indicated that miracles would only be performed during the apostolic period, since the passing on of the gifts was always accomplished by the laying on of their hands. Once the apostles died, the gifts died with them.
Paul wrote..
."Love never fails. But if there are gifts of prophecy, they will be done away with; if there are tongues, they will cease; if there is knowledge, it will be done away with.. . . .When I was a child, I used to speak as a child, to think as a child, to reason as a child; but now that I have become a man, I have done away with the traits of a child. . . . .Now, however, these three remain: faith, hope, love; but the greatest of these is love." (1 Corinthians 13:8; 11; 13)
So instead of miracles, there would be other more mature things to indicate a person's devotion to God as a disciple of his Christ...."faith, hope and love".
The Bible confirms that the choosing of "saints" (holy ones with a heavenly calling. Hebrews 3:1) was left entirely in God's jurisdiction. It isn't the church who chooses a saint, it is God. And it is done whilst the person is alive...not after they have died.
Romans 8:15-17....
"For you did not receive a spirit of slavery causing fear again, but you received a spirit of adoption as sons, by which spirit we cry out: “Abba, Father!” 16 The spirit itself bears witness with our spirit that we are God’s children. 17 If, then, we are children, we are also heirs—heirs indeed of God, but joint heirs with Christ—provided we suffer together so that we may also be glorified together."
Acts 9:32, 36-41,
(Jerusalem Bible): “Peter visited one place after another and eventually came to the saints [ha·giʹous] living down in Lydda. At Jaffa there was a woman disciple called Tabitha [who died] . . . [Peter] turned to the dead woman and said, ‘Tabitha, stand up’. She opened her eyes, looked at Peter and sat up. Peter helped her to her feet, then he called in the saints and widows and showed them she was alive.”
Clearly, these saints were not yet in heaven, nor was it just an outstanding individual such as Peter who was viewed as a saint.
2 Cor. 1:1; 13:12,
JB: “From Paul, appointed by God to be an apostle of Christ Jesus, and from Timothy, one of the brothers, to the church of God at Corinth and to all the saints [ha·giʹois] in the whole of Achaia.” “Greet one another with the holy kiss. All the saints send you greetings.”
All these early Christians who were cleansed by the blood of Christ and set apart for God’s service as prospective "joint heirs with Christ" in his heavenly kingdom were referred to as saints, or holy ones. You can see that recognition of their being "saints" was obviously not deferred until after they had died.
Since these so-called miracles were accomplished after "Mother Teresa" had died, it is really relying on superstition rather than on what the Bible tells us about "saints".
No miracles performed after the death of the apostles is genuine. No miracle performed by Jesus or the apostles was useless either. (No weeping statues or stigmata or anything else that smacks of superstition.) The Bible indicates that the devil can perform tricks too.
Those upon whom the gifts of the spirit were bestowed may have used the gifts until they passed away but there was no one left to pass the gifts onto others...and there was no need. The Christian congregation was then firmly established and the writings of Paul and the other apostles such as John and Peter were used as a basis for teaching about the Lord Jesus and the importance of his mission to rescue faithful ones from the sin inherited from Adam. (Romans 5:12)
I'm afraid that the Catholic church has deviated from what is taught in scripture and taken on a role that actually belongs to God alone.