But [even though] we had already suffered and been mistreated at Philippi [See Acts 16:19-24], as you people know, we had the boldness, [with help] from God, to tell you His message in spite of much struggle [i.e., opposition].

But brothers, after we were separated from you for a short time --- in person but not in spirit --- we became all the more eager [to come to you] and strongly desired to see you in person. [Note: The word "separated" here denotes the traumatic experience of a child being forcibly removed from its parents. It had been about six months since Paul left Thessalonica under adverse circumstances].

Now you people do not need anyone to write to you about loving [your] brothers, for you yourselves have been taught by God to love one another.