Your love has given me great joy and encouragement, because you, brother, have refreshed the hearts of the Lord's people. (NIV)
For I have derived great joy and comfort and encouragement from your love, because the hearts of the saints [who are your fellow Christians] have been cheered and refreshed through you, [my] brother. (AMP)
For we have great joy and consolation in thy love, because the bowels of the saints are refreshed by thee, brother. (KJV)