but having suffered before and been shamefully treated, as you know, at Philippi, we grew bold in our God to tell you the Gospel of God in much conflict.
In our God ...  This expression also appears in  1 Thessalonians 3:9;  2 Thessalonians 1:11,12, and  1 Corinthians 6:11.  In the greater sense, all things are in God, for as Paul said, "In him we live and move and have our being"; but something more specific is meant here.  Those who are in Christ and are working in harmony with the will of God are in a most beneficent and specific sense said to be "in God."