We can see what Paul believed by his letters that were inspired by God. Do you have proof he preached contrary to what he wrote? Can you see what you must do to the Word of God, the Apostles and prophets to uphold a belief of your church? It must be worth it to you, but it does no service to the Lord.
If you are bible-only, you’re contradicting what the bible demands of you.
1) 1 Corinthians 11:2: “. . . keep the ordinances, as I delivered {them} to you.”
2) 2 Thessalonians 2:15: “. . . hold the traditions which ye have been taught, whether by word, or our epistle.”
3) 2 Thessalonians 3:6: “Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us.”
4) 1 Corinthians 15:1-3: “Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand; By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain. For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures.”
5) 1 Thessalonians 2:13: “. . . when ye received the word of God which ye heard of us, ye received {it} not {as} the word of men, but as it is in truth, the word of God, which effectually worketh also in you that believe.”
6) Jude 3: “. . . ye should earnestly contend for the faith which was once delivered unto the saints.”
7) Lk 1:1-5 Inasmuch as many have taken in hand to set in order a narrative of those things which have been fulfilled among us, just as those who from the beginning were eyewitnesses and ministers of the word delivered them to us, it seemed good to me also, having had perfect understanding of all things from the very first, to write to you an orderly account, most excellent Theophilus, that you may know the certainty of those things in which you were instructed.
8) Rom 6:17 But God be thanked that [though] you were slaves of sin, yet you obeyed from the heart that form of doctrine to which you were delivered.
9) 1 Cor 11:23 For I received from the Lord that which I also delivered to you
10) Gal 1:9ff But even if we, or an angel from heaven, preach any other gospel to you than what we have preached to you, let him be accursed. As we have said before, so now I say again, if anyone preaches any other gospel to you than what you have received, let him be accursed.
11) 2 Pet 2:21 For it would have been better for them not to have known the way of righteousness, than having known [it,] to turn from the holy commandment delivered to them.
12) Romans 10:15 And how shall they preach unless they are sent?
13) John 20:30 And truly Jesus did many other signs in the presence of His disciples, which are not written in this book;
14) 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.
15) 2 John 1:12 Having many things to write to you, I did not wish [to do so] with paper and ink; but I hope to come to you and speak face to face, that our joy may be full.
16) Matthew 17:5 While he was still speaking, behold, a bright cloud overshadowed them; and suddenly a voice came out of the cloud, saying, “This is My beloved Son, in whom I am well pleased. Hear Him!”
17) Luke 10:16 “He who hears you hears me, and he who rejects you rejects me, and he who rejects me rejects him who sent me.
18) Matthew 16:19 And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.
19) Matthew 18:18 Verily I say unto you, Whatsoever ye shall bind on earth shall be bound in heaven: and whatsoever ye shall loose on earth shall be loosed in heaven.
20) Luke 24:45 Then he opened their minds to understand the scriptures.
21) Matthew 13:11 And he answered them, “To you it has been given to know the secrets of the kingdom of heaven, but to them it has not been given
22) Luke 8:10 he said, “To you it has been given to know the secrets of the kingdom of God; but for others they are in parables, so that seeing they may not see, and hearing they may not understand.
23) 1 Timothy 3: 14-15 I hope to come to you soon, but I am writing these instructions to you so that, if I am delayed, you may know how one ought to behave in the household of God, which is the church of the living God, the pillar and bulwark of the truth.
In Paul’s own written words (like in 2 Thess 2) he refers his readers in Thessalonika BACK TO WHAT HE TOLD THEM when he evangelized them. That should be a close enough transcript for a catholic, but of course it cannot be accepted as such because the mind has already settle on the negative it seeks to support.