1Co 11:2 Now I praise you, brethren, that ye remember me in all things, and keep the ordinances, as I delivered them to you.
This is the keeping of the Lord's Supper, instituted by Jesus and delivered by Paul. Catholics have even managed to change that.
Are you kidding? The Last Supper is kept in the Liturgy (Mass) lol. How did the Church change that?
2Th 2:14 Whereunto he called you by our gospel, to the obtaining of the glory of our Lord Jesus Christ. Therefore, brethren, stand fast, and hold the traditions which ye have been taught, whether by word, or our epistle.
This is the Gospel of Jesus Christ. It is man's tradition that needs to be avoided, I did not think I would need to say that.
The traditions that the Catholic Church holds have been passed on since the early Church Fathers, guided by the Holy Spirit, not by man. You're absolutely right, you didn't need to say that because you had it wrong.
2Th 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.
This is also very true. We need to withdraw ourselves from the tradition of disorderly men. i.e. those who change God's order.
Now, understand what he is telling them. "that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us." The traditions that they received from them (and the early Church fathers) are the same traditions that the Church still follow today. So in actual fact, the brothers that "walketh disorderly" are the ones who don't follow those traditions, aren't they?
The following list give a summation. If the Bible is a Catholic book,
1. Why does it condemn clerical dress? (Matt. 23:5-6).
2. Why does it teach against the adoration of Mary? (Luke 11:27-28).
3. Why does it show that all Christians are priests? (1 Pet. 2:5,9).
4. Why does it condemn the observance of special days? (Gal. 4:9-11).
5. Why does it teach that all Christians are saints? (1 Cor. 1:2).
6. Why does it condemn the making and adoration of images? (Ex. 20:4-5).
7. Why does it teach that baptism is immersion instead of pouring? (Col. 2:12).
8. Why does it forbid us to address religious leaders as "father"? (Matt. 23:9).
9. Why does it teach that Christ is the only foundation and not the apostle Peter? (1 Cor. 3:11).
10. Why does it teach that there is one mediator instead of many? (1 Tim. 2:5).
11. Why does it teach that a bishop must be a married man? (1 Tim. 3:2, 4-5).
12. Why is it opposed to the primacy of Peter? (Luke 22:24-27).
13. Why does it oppose the idea of purgatory? (Luke 16:26).
14. Why is it completely silent about infant baptism, instrumental music in worship, indulgences, confession to priests, the rosary, the mass, and many other things in the Catholic Church?
Massive list of Roman Catholic False doctrines