Therefore, brothers, stand firm and hold fast to the traditions that you were taught, either by an oral statement or by a letter of ours.
2 Thessalonians 2, 15
The verse you quoted above is not refering to the man made traditions as taught by your Church,Apostle Paul here is refering to the teachings as he has taught them in the chapter below.
2Th 2:1 Now concerning the coming of our Lord Jesus Christ and our being gathered together to him, we ask you, brothers,
2Th 2:2 not to be quickly shaken in mind or alarmed, either by a spirit or a spoken word, or a letter seeming to be from us, to the effect that the day of the Lord has come.
2Th 2:3 Let no one deceive you in any way. For that day will not come, unless the rebellion comes first, and the man of lawlessness is revealed, the son of destruction,
2Th 2:4 who opposes and exalts himself against every so-called god or object of worship, so that he takes his seat in the temple of God, proclaiming himself to be God.
2Th 2:5 Do you not remember that when I was still with you I told you these things?
2Th 2:6 And you know what is restraining him now so that he may be revealed in his time.
2Th 2:7 For the mystery of lawlessness is already at work. Only he who now restrains it will do so until he is out of the way.
2Th 2:8 And then the lawless one will be revealed, whom the Lord Jesus will kill with the breath of his mouth and bring to nothing by the appearance of his coming.
2Th 2:9 The coming of the lawless one is by the activity of Satan with all power and false signs and wonders,
2Th 2:10 and with all wicked deception for those who are perishing, because they refused to love the truth and so be saved.
2Th 2:11 Therefore God sends them a strong delusion, so that they may believe what is false,
2Th 2:12 in order that all may be condemned who did not believe the truth but had pleasure in unrighteousness.
2Th 2:13 But we ought always to give thanks to God for you, brothers beloved by the Lord, because God chose you as the firstfruits to be saved, through sanctification by the Spirit and belief in the truth.
2Th 2:14 To this he called you through our gospel, so that you may obtain the glory of our Lord Jesus Christ.
2Th 2:15 So then, brothers, stand firm and hold to the traditions that you were taught by us, either by our spoken word or by our letter.
2Th 2:16 Now may our Lord Jesus Christ himself, and God our Father, who loved us and gave us eternal comfort and good hope through grace,
2Th 2:17 comfort your hearts and establish them in every good work and word.
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I praise you because you remember me in everything and hold fast to the traditions, just as I handed them on to you.
1 Corinthians 11, 2
Again,what traditions are the verse above refering to,surely you don't mean the man made traditions of your Church.If you look at the verse in context in the chapter below,in 1 Corinthians 11,2 Paul here is refering to the teachings which he taught them in the verses below,so you are taking the above two verses you've quoted and inferring that Apostle Paul meant that he was referring to all traditions as taught by your Church,again the meaning is quite clear that he was only talking about those traditions which he has taught his followers.
1Co 11:1 Be imitators of me, as I am of Christ.
1Co 11:2 Now I commend you because you remember me in everything and maintain the traditions even as I delivered them to you.
1Co 11:3 But I want you to understand that the head of every man is Christ, the head of a wife is her husband, and the head of Christ is God.
1Co 11:4 Every man who prays or prophesies with his head covered dishonors his head,
1Co 11:5 but every wife who prays or prophesies with her head uncovered dishonors her head, since it is the same as if her head were shaven.
1Co 11:6 For if a wife will not cover her head, then she should cut her hair short. But since it is disgraceful for a wife to cut off her hair or shave her head, let her cover her head.
1Co 11:7 For a man ought not to cover his head, since he is the image and glory of God, but woman is the glory of man.
1Co 11:8 For man was not made from woman, but woman from man.
1Co 11:9 Neither was man created for woman, but woman for man.
1Co 11:10 That is why a wife ought to have a symbol of authority on her head, because of the angels.
1Co 11:11 Nevertheless, in the Lord woman is not independent of man nor man of woman;
1Co 11:12 for as woman was made from man, so man is now born of woman. And all things are from God.
1Co 11:13 Judge for yourselves: is it proper for a wife to pray to God with her head uncovered?
1Co 11:14 Does not nature itself teach you that if a man wears long hair it is a disgrace for him,
1Co 11:15 but if a woman has long hair, it is her glory? For her hair is given to her for a covering.
1Co 11:16 If anyone is inclined to be contentious, we have no such practice, nor do the churches of God.
1Co 11:17 But in the following instructions I do not commend you, because when you come together it is not for the better but for the worse.
1Co 11:18 For, in the first place, when you come together as a church, I hear that there are divisions among you. And I believe it in part,
1Co 11:19 for there must be factions among you in order that those who are genuine among you may be recognized.
1Co 11:20 When you come together, it is not the Lord's supper that you eat.
1Co 11:21 For in eating, each one goes ahead with his own meal. One goes hungry, another gets drunk.
1Co 11:22 What! Do you not have houses to eat and drink in? Or do you despise the church of God and humiliate those who have nothing? What shall I say to you? Shall I commend you in this? No, I will not.
1Co 11:23 For I received from the Lord what I also delivered to you, that the Lord Jesus on the night when he was betrayed took bread,
1Co 11:24 and when he had given thanks, he broke it, and said, "This is my body which is for you. Do this in remembrance of me."
1Co 11:25 In the same way also he took the cup, after supper, saying, "This cup is the new covenant in my blood. Do this, as often as you drink it, in remembrance of me."
1Co 11:26 For as often as you eat this bread and drink the cup, you proclaim the Lord's death until he comes.
1Co 11:27 Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty concerning the body and blood of the Lord.
1Co 11:28 Let a person examine himself, then, and so eat of the bread and drink of the cup.
1Co 11:29 For anyone who eats and drinks without discerning the body eats and drinks judgment on himself.