How can we take a fallible man’s word (witnesses, the Pope) about the miracles of a Saint? She wants to know how the Church became the authority to canonize Saints.
We take Peter’s word that Jesus performed miracles. Also Matthew’s word or Luke’s word that Peter and Paul performed miracles. All of which are fallible men. Why should we believe them? (Just a thought)
But your question sounds like its about authority…
Jesus gave the authority to His church through His bishops.
Matthew 16:18-19 **
18"I also say to you that you are Peter**, and upon this rock I will build
My church; and the gates of Hades will not overpower it.
19"I will give
you the keys of the kingdom of heaven; and whatever
you bind on
earth shall have been bound in
heaven, and whatever
you loose on earth shall have been loosed in** heaven**."
Jesus’ “keys” undeniably represent authority.This was not seriously questioned by anyone until the Protestant reformation 1,500 years later after Peter’s investiture.
Also for Jesus to give Peter and the apostles,
mere human beings, the authority to bind in heaven what they bound on earth requires infallibility. This is a gift of the Holy Spirit and has nothing to do with the holiness of the person receiving the gift.
Matthew 10:20
20"For it is not you who speak, but it is the **Spirit of your Father who speaks in you. **
Luke 12:12
12for **the Holy Spirit **
will teach you in that very hour
what you ought to say."
Jesus tells His apostles it is not they who speak, but the Spirit of their Father speaking through them. If the Spirit is the one speaking and leading the Church, the Church cannot err on matters of faith and morals.
** Matthew 28:20**
20 teaching them to observe all that** I **commanded you; and lo,
I am with you always, even to the end of the age."
Jesus promises that He will be with the Church always. Jesus’ presence in the Church assures infallible teaching on faith and morals. With Jesus present, we can never be deceived.
Matthew 18:17-18
17"If he refuses to listen to them, tell it to the church; and if he refuses to listen
even to the church, let him be to you as a Gentile and a tax collector.
18"Truly I say to you, whatever
you bind on earth shall have been bound in heaven; and whatever
you loose on earth shall have been loosed in heaven.
the Church (not Scripture) is the final authority on questions of the faith. This demands infallibility when teaching the faith. She must be prevented from teaching error in order to lead her members to the fullness of salvation.
Luke 10:16
16"The one who listens to
you listens to Me, and the one who
rejects you rejects Me; and he who **rejects Me rejects the One who sent Me." **
Jesus is very clear that the bishops of the Church speak with Christ’s infallible authority.
John 16:13
13"But when He, the
Spirit of truth, comes, He
will guide you into all the truth; for He will not speak on His own initiative, but whatever He hears, He will speak; and He will disclose to you what is to come.
Jesus promises that the Spirit will “guide” the Church into all truth. Our knowledge of the truth develops as the Spirit guides the Church, and this happens over time.
1 Timothy 3:15
15but in case I am delayed, I write so that you will know how one ought to conduct himself in the
household of God, which is the
church of the living God, **the pillar and support of the truth. **
Paul says the apostolic Church (not Scripture) is the pillar and foundation of the truth. But for the Church to be the pinnacle and foundation of truth, she must be protected from teaching error, or infallible. She also must be the Catholic Church, whose teachings on faith and morals have not changed for 2,000 years. God loves us so much that He gave us a Church that infallibly teaches the truth so that we have the fullness of the means of salvation in His only begotten Son.
The Church became the authority to canonize Saints the same way it became the authority to decide what books went into the New Testament, through God.
I hope this helps.
Scripture Catholic
scripturecatholic.com/the_church.html#the_church-IV