For I rejoiced greatly when the brothers came and testified to your truth, just as you are living according to the truth. ¹ 

I have great joy in the Lord because now at last you have again expressed your concern for me. (Now I know you were concerned before but had no opportunity to do anything.) ¹ 

I rejoiced greatly because I have found some ¹  of your children living according to the truth, ²  just as the Father commanded us. ³