When anyone disagrees with what is in the Bible, I choose Bible. It's really that simple. We are saved by faith through grace; Jesus is God; He has not lost one yet. Faith in Jesus as Lord, God, Savior, Creator, Judge -- that is now and always has been enough for salvation. Once He changes you, you are His. We have a choice of masters: Either a slave of sin or a slave of righteousness. Jesus is my righteousness. I choose Him -- directly, simply, completely. And I am His.
Note this is all oral teaching. There is no suggestion that Timothy just passes on documents to others and tells them to work it out for themselves.
You do understand the New Testament was first taught by the Apostles by mouth because there was no such written New Testament like we have today, and that you can quote yourself, in complete trust.
Your quotes were typical denials of point #one above, but this one, "John 21:25 And there are also many other things that Jesus did, which if they were written one by one, I suppose that even the world itself could not contain the books that would be written. Amen", takes the cake for intellectual dishonesty on your part.
You want to assert that the Holy Spirit left out the entire three ring circus act performed at every sunday mass?
And you feel this is logical and true because why?
Has it ever occured to you while you're reading the parts of the bible you agree with, the other stuff you skip over is contradicting your whole religion, and that's why your mass is not in the bible? The Apostles did not institute seven sacraments and pass them on to anyone!
You quoted the Apostle John a couple of times so I trust you believe him at his word. Let me ask you to read the following passage from his one and only Gospel
Please tell me if you don't comprehend the salvation message being spoken by Jesus' own mouth, and that our 18 year old boy would have read too. Would our island child be searching for a eucharist or a Person to receive?
John 6:30-63 New Revised Standard Version Catholic Edition (NRSVCE)
30 So they said to him, “What sign are you going to give us then, so that we may see it and believe you? What work are you performing? 31 Our ancestors ate the manna in the wilderness; as it is written, ‘He gave them bread from heaven to eat.’” 32 Then Jesus said to them, “Very truly, I tell you, it was not Moses who gave you the bread from heaven, but it is my Father who gives you the true bread from heaven. 33 For the bread of God is that which[a] comes down from heaven and gives life to the world.” 34 They said to him, “Sir, give us this bread always.”
35 Jesus said to them, “I am the bread of life. Whoever comes to me will never be hungry, and whoever believes in me will never be thirsty. 36 But I said to you that you have seen me and yet do not believe. 37 Everything that the Father gives me will come to me, and anyone who comes to me I will never drive away; 38 for I have come down from heaven, not to do my own will, but the will of him who sent me. 39 And this is the will of him who sent me, that I should lose nothing of all that he has given me, but raise it up on the last day. 40 This is indeed the will of my Father, that all who see the Son and believe in him may have eternal life; and I will raise them up on the last day.”
41 Then the Jews began to complain about him because he said, “I am the bread that came down from heaven.” 42 They were saying, “Is not this Jesus, the son of Joseph, whose father and mother we know? How can he now say, ‘I have come down from heaven’?” 43 Jesus answered them, “Do not complain among yourselves. 44 No one can come to me unless drawn by the Father who sent me; and I will raise that person up on the last day. 45 It is written in the prophets, ‘And they shall all be taught by God.’ Everyone who has heard and learned from the Father comes to me. 46 Not that anyone has seen the Father except the one who is from God; he has seen the Father. 47 Very truly, I tell you, whoever believes has eternal life. 48 I am the bread of life. 49 Your ancestors ate the manna in the wilderness, and they died. 50 This is the bread that comes down from heaven, so that one may eat of it and not die. 51 I am the living bread that came down from heaven. Whoever eats of this bread will live forever; and the bread that I will give for the life of the world is my flesh.”
52 The Jews then disputed among themselves, saying, “How can this man give us his flesh to eat?” 53 So Jesus said to them, “Very truly, I tell you, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. 54 Those who eat my flesh and drink my blood have eternal life, and I will raise them up on the last day; 55 for my flesh is true food and my blood is true drink. 56 Those who eat my flesh and drink my blood abide in me, and I in them. 57 Just as the living Father sent me, and I live because of the Father, so whoever eats me will live because of me. 58 This is the bread that came down from heaven, not like that which your ancestors ate, and they died. But the one who eats this bread will live forever.” 59 He said these things while he was teaching in the synagogue at Capernaum.
The Words of Eternal Life
60 When many of his disciples heard it, they said, “This teaching is difficult; who can accept it?” 61 But Jesus, being aware that his disciples were complaining about it, said to them, “Does this offend you? 62 Then what if you were to see the Son of Man ascending to where he was before? 63 It is the spirit that gives life; the flesh is useless. The words that I have spoken to you are spirit and life.
The child on the island would be saying that there certainly has to be more about this Christianity than just a book, and would certainly go looking for it.
As for the Mass, yes it comes from the Holy Scriptures and it is how the early Christians worshipped. They did not just gather to hear some Pastor to expound on his interpretation of the various passages, but gathered together to for the Eucharistic Banquet as Jesus instructed us to. For further illumination on early Christian worship I suggest reading the words about this from St. Justin Martyr, a man who willingly went to his death for the faith.