First, all that pertains to faith in Christ is not contained in scripture. The Protestant dogma of sola scriptura is based on nothing in scripture and yet attempts to hold all other doctrine to this dogma that everything must be substantiated by scripture. “And if it is not in scripture then it must not be true.”
That is hypocrisy– Luther’s because he started it and Protestants usually don’t notice the hypocrisy of it all.
However, Scripture does tell us that all that Jesus did is NOT contained in the Gospels.
Jn 21:25 Jesus did many other things as well. If every one of them were written down, I suppose that even the whole world would not have room for the books that would be written.
At the last supper Jesus was alone with the twelve. He cleansed them by the washing of their feet. It was at this time that He ordained them to the priesthood (Sacrament of Holy Orders) and instituted the Sacrament of the Eucharist. But this is not explicit in the words.
After His resurrection and before Pentecost, Jesus bestows the Holy Spirit upon the apostles privately and thereby institutes the Sacrament of Confession/Reconciliation. This is much more explicit in Scripture.
John 20: 21 Again Jesus said, “Peace be with you! As the Father has sent me, I am sending you.” 22And with that he breathed on them and said, “Receive the Holy Spirit. 23If you forgive anyone his sins, they are forgiven; if you do not forgive them, they are not forgiven.”
Only the apostles were there. They were all men. These are all the sacraments that ONLY a priest may offer. Jesus never said only men could be priests, He demonstrated it. Words can be interpreted and twisted to mean various things but actions speak louder than words.
All the rules of liturgy, sacraments, faith etc. were worked out by those in authority in the Church in the early years and fine tuned through the centuries. This authority was given to Peter, the apostles and their successors by Christ when they were given the power to “bind and loose”; a rabbinic idiom meaning authority to rule.
Everything is simply NOT in Scripture. This can be proven by a few examples off the top of my head.
Jesus talks about “Moses’ seat” and yet this is nowhere to be found in the OT. And yet, Jesus mentions it without explanation b/c everyone knew what He meant by it b/c the concept of Moses’ seat was taught orally.
Matthew 23:2 “The teachers of the law and the Pharisees sit in Moses’ seat.
Also in Jude 1:9 We find information that is NOT contained anywhere in the OT.
Jude 1:9 But even the archangel Michael, when he was disputing with the devil about the body of Moses, did not dare to bring a slanderous accusation against him, but said, “The Lord rebuke you!”
These two examples could be multiplied. They indicate that a body of information /teaching existed outside of scripture that was authoritative, Jesus Himself makes use of it, and passed down from one generation to the next orally.
For this reason St. Paul says:
2 Thessalonians 2:15 So then, brethren, stand firm and hold to the traditions which you were taught, whether by word of mouth or by letter from us.
And what is the foundation of all TRUTH? The Church
1 Timothy 3:15 if I am delayed, you will know how people ought to conduct themselves in God’s household, which is the church of the living God, the pillar and foundation of the truth