[This letter is from] Paul, and Silvanus and Timothy, [and is being sent] to the church of the Thessalonians [Note: This was a town in present-day northeastern Greece] in [fellowship with] God, the Father and the Lord Jesus Christ. May God's unearned favor and peace be upon you.

for now we [really] live, if you [continue to] stand firm in [the service of] the Lord [i.e., Paul could enjoy life much more in knowing that the Thessalonians were living for the Lord faithfully].

[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.

So, when we could not stand it any longer [Note: Paul's concern for the spiritual well-being of the Thessalonian Christians became unbearable], we [i.e., I, See verse 5] thought it best to be left behind, alone, at Athens [Note: Paul was willing to labor alone at Athens, so he could send his fellow-workers to minister to others. See Acts 17],

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].