[This letter is from] Paul, Silvanus, and Timothy, [and is being sent] to the church of the Thessalonians in [fellowship with] God our Father and the Lord Jesus Christ.

May you have unearned favor and peace from God the Father and the Lord Jesus Christ.

and to provide [future] rest for you, along with us, who are afflicted. [This will occur] when Jesus is revealed from heaven in blazing fire [i.e., at His second coming], accompanied by His mighty angels.

They will pay the penalty of never ending destruction, being banished from the presence of the Lord and from His mighty splendor.

we request that you people do not become shaken up in your mind, nor alarmed, either by a spirit [i.e., by some prophetic prediction], or by a report, or by a letter supposedly from us, that the day of the Lord [i.e., when Jesus returns] has already come.

Do not allow anyone to deceive you in any way, for it will not occur until the rebellion comes first and the man of lawlessness becomes evident. [Note: This "rebellion" refers to a significant falling away from the teaching and practice of true Christianity (See I Tim. 4:1), characterized by the rise of an authoritarian religious leader]. This man is doomed to be destroyed

[But] for now, there is something holding him back [i.e., holding back the man of lawlessness from emerging, See verses 3-4], and you people know what it is. [It is restraining him] so that he will not be revealed until his own [due] time.

But we ought to thank God for you always, brothers [who are] dearly loved by the Lord, because God has chosen you from the beginning [Note: Some manuscripts use the Greek word for "firstfruits" instead of "beginning" here, but it is difficult to know in what sense the Thessalonian Christians were "first"], in order to be saved through being set apart by the Holy Spirit and through belief of the truth [of the Gospel].

So then, brothers, stand firm [in the faith], and hold onto the [inspired] traditions which you were taught, whether by word [of mouth] or by a letter from us.

And [pray] that we will be rescued from wicked and evil people, because not everyone has faith.

But the Lord is faithful, and He will strengthen and protect you from the evil one [Note: The Greek says just "the evil"].

Now we command you, brothers, in the name [i.e., by the authority] of our Lord Jesus Christ, that you people stay away from every brother [or sister] who lives an idle life [See note on I Thess. 5:14], and not according to the [inspired] tradition which you received from us.