I have been reflecting upon v.6 all week, 6 I pray that the sharing of your faith may become effective and powerful because of your accurate knowledge of every good thing which is ours in Christ. Paul says to Philemon that he prays that his ability to share his faith will be effective and powerful BECAUSE of his accurate knowledge of God’s Holy Word.
I tried to find a sermon just upon that theme but could not (I may have to write my own), what I did find were many overarching themes about forgiveness. In the end I found the following the most complete.
Here is a three part series from John MacArthur that I hope you will be a blessing to you.
The Beauty and Blessing of Forgiveness, Part 1 Philemon 1-3
The Beauty and Blessing of Forgiveness, Part 2 Philemon 4-18
The Beauty and Blessing of Forgiveness, Part 3 – Philemon 19–25