Paul's ministry in Thessalonica and then Berea seems to have been both brief and fruitful. The jealous Jews saw to the brevity (Acts 17:5-9, 15), but God saw to the fruitfulness (Acts 17:2-4, 11-12).
Writing the first of two letters to the Thessalonians, the team of Paul, Silvanus, and Timothy, addresses them as "the church of the Thessalonians in God the Father and the Lord Jesus Christ." Because three names appear at the beginning of the letter, understandably "we" and "our" are used in chapters 1 and 2. Then Paul, concerned for their response to his situation, sent Timothy back to them: "for fear that somehow the tempter had tempted you, and our labor should be in vain" (1 Thessalonians 3:5).
Paul's joyful relief at Timothy's report (1 Thessalonians 3:6-10) elicits his prayer (recorded in 1 Thessalonians 3:11-13): "Now may our God and Father himself, and our Lord Jesus, direct our way to you, and may the Lord make you increase and abound in love for one another and for all, as we do for you, so that he may establish your hearts blameless in holiness before our God and Father, at the coming of our Lord Jesus with all his saints."
What words/expressions jump out at me? "Now" and "our" and "God and Father himself" and "our Lord Jesus" and "direct" and "increase and about" and "in love" and "so that" and "he may" and "establish your hearts" and "blameless in holiness."
It appears that our God and Father Himself is to do this work so that their hearts are blameless in holiness before Him at the coming of the Lord Jesus with all His saints.
I don't know about you, but this intercession and the "so that" takes my breath away. Here is Paul, writing under the inspiration of the Holy Spirit, such a tender and compassionate prayer for a newly established group of believers. What an encouragement it must have been when they heard it.