We tend to think of the Philadelphians as being without fault because Christ does not make a pointed and detailed listing of their sins. Notice, however, that they have "a little strength"—they are weak. This is not a put-down but an honest appraisal. He is in fact commending them for doing as well as they have.
We need to consider this in terms of our recent lives in the church. The evidence shows that the Philadelphia group lacks the spiritual strength of the beginning of the Ephesian group. We have not seen many mountains moving out of their places.
We are among the generation addressed by Jesus: "When the Son of Man comes, will He find faith on the earth?" (Luke 18:8). A careful scrutiny of these verses shows something is missing that almost all assume is there: They do not say the church at Philadelphia is full of brotherly love. Philadelphia is the name of the city, and we draw an assumption that Christ calls them "Philadelphians" because they exhibit remarkable love for one another. To be honest, we would have to make the same assumption for each of the groups, and no one has been able to make a significant conclusion in this vein for the Ephesian group in regard to the name "Ephesus," or for the Thyatiran group with "Thyatira," or for the others. Perhaps only one name does fit somewhat: Laodicea, which means "judgment of the people."
The Philadelphians have one fine quality—they are faithful. This is what He compliments them for being, meaning they have a commendable measure of obedience. Nevertheless, the Philadelphians, though faithful, are somewhat weak. The Laodiceans are largely derived from a base that came from the Philadelphians, making them weaker still, due to their lackadaisical inattention to their relationships with God.
John W. Ritenbaugh
A Place of Safety? (Part 5)