Mercy—in a time of wretchedness. Therefore mercy stands first; the mercy of Christ (Jud 1:21). peace—in the Holy Ghost (Jud 1:20). love—of God (Jud 1:21). The three answer to the divine Trinity. be multiplied—in you and towards you.
Robert Jamieson, A. R. Fausset, and David Brown, Commentary Critical and Explanatory on the Whole Bible, vol. 2 (Oak Harbor, WA: Logos Research Systems, Inc., 1997), 543.