1 Thessalonians 2:1-4

For you yourselves know, brothers and sisters, about our coming to you—it has not proven to be purposeless.  But although we suffered earlier and were mistreated in Philippi, as you know, we had the courage in our God to declare to you the gospel of God in spite of much opposition.  For the appeal we make does not come from error or impurity or with deceit,  but just as we have been approved by God to be entrusted with the gospel, so we declare it, not to please people but God, who examines our hearts.

It’s clear from these verses that Paul (and others) experienced some difficulty – possibly from believers – while in Philippi at one time. It’s also possible that Paul is referencing persecution of some kind. Enter verse 2 – “but with the help of God we dared to tell you his gospel in the face of strong opposition.” In this, Paul persevered and took right action to please God. He didn’t do it to please people, or for any self-serving interests. He did it knowing that God tests the hearts of those who love Him. Your next “pop quiz of the heart” could be right around the corner.