By this final greeting "we sing for his departure from this life and separation from us, but also because there is a communion and a reunion. For even dead, we are not at all separated from one another, because we all run the same course and we will find one another again in the same place. We shall never be separated, for we live for Christ, and now we are united with Christ as we go toward him . . . we shall all be together in Christ." St. Simeon of Thessalonica, De ordine sepulturæ. 336:PG 155,684.
There is some useful information about preparing a Catholic funeral on the Westminster Diocesan website, which can be found by clicking here. We have downloaded two short guides from this website to assist parishioners and funeral directors with arrangements: