Do you ever once in your life actually read the context or research something before you mouth off?
Both passages are in the context of salvation.
3 Unceasingly, remembering--your work of faith and labour of love and endurance of hope, of our Lord Jesus Christ, before our God and Father: [context: salvation]
4 Knowing, brethren beloved by God, your election,-- [context: salvation]
5 How that, our glad-message (Gospel), [context: salvation] came not unto you, in word only, but also in power, and in Holy Spirit, and in much assurance,--even as ye know what manner of men we became unto you, for your sake;
6 And, ye, became, imitators of us, and of the Lord, giving welcome unto the word, [context: salvation] in much tribulation, with joy of Holy Spirit;
7 So that ye became an example unto all who were coming to the faith, [context: salvation] in Macedonia and in Achaia:
8 From you, in fact, hath sounded forth the word of the Lord [context: salvation] --not only in Macedonia and in Achaia, but, in every place, your faith which is toward God, [context: salvation] hath gone forth, so that, no need, have we to be saying anything; (1 Thess. 1:3-8)
8 In a fiery flame; holding forth vengeance--against them that refuse to know God, and them who decline to hearken unto the glad-message of our Lord Jesus, [context: salvation]
9 Who, indeed, a penalty, shall pay--age-abiding (everlasting) destruction from the face of the Lord [context: salvation] and from the glory of his might--
10 Whensoever he shall come, to be made all-glorious in his saints, and to be marveled at in all who believed,--because our witness unto you was believed,--in that day. [context: salvation]
11 Unto which end, we are also praying continually for you, that our God may count, you, worthy of your calling, [context: salvation] and fulfill every good-pleasure of goodness and work of faith, with power,--
12 That the name of our Lord Jesus may be made all-glorious in you, and, ye, in him, According to the favour of our God and Lord Jesus Christ. [context: salvation] (2 Thess. 1:8-12)
Nothing there about salvation?!
Christ himself along with Paul also calls faith in a work in John 6.