1 Thessalonians 2:2 But even though we had already suffered and been mistreated at Philippi : - See Acts, 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.

AUV⁽ⁱ⁾ ² 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].