I was very happy when I learned that my children [i.e., members of the congregation there] are living in [harmony with the] truth, just as we have been commanded to do by the Father.
For God, whom I serve wholeheartedly in [preaching] the Gospel of His Son, is my witness [to the truth] of how continually I mention you in my prayers.
For I have much joy and encouragement from [observing] your love, because you have cheered the hearts of the saints [i.e., God’s holy people], brother.
For even though I am absent [from you] in body, still I am present with you in spirit, rejoicing and observing [i.e., with my mind’s eye] your orderly behavior and the firmness of your faith in Christ.
So, my dearly loved brothers [and sisters, See next two verses], those whom I long to see, [who are] my [reason for] being glad and [who are] my crown of victory; stand firm in [your devotion to] the Lord, my dear ones.
For I have often told you before, and am telling you again with tears in my eyes, that many people are living as the enemies of the cross of Christ [i.e., their lives oppose the purpose of Christ’s death].
I tell you that, in the same way, there will be more joy in heaven over one sinful person who repents [i.e., changes his heart and life], than over ninety-nine persons who do not need to repent.