Philemon 1:4–7 describes Paul’s positive views of Philemon. Paul says he not only thanks God for Philemon, but does so always. Paul praises Philemon’s selfless acts of love and generosity, especially those towards fellow Christians. This is meant to set the stage for Paul’s upcoming request: that Philemon forgive and free his runaway slave, Onesimus.
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“Philemon 1:7” Bibleref.com
7 For we have much joy and comfort in your love, because the hearts of the saints have been refreshed through you, brother.