Chicago, IL 60615-3753. Precious Blood Parish Missions. Precious Blood Parish Missions sends teams of preachers - usually one priest, one sister and one lay person - to parishes throughout North America to proclaim the Good News of our salvation in Christ and through his Precious Blood. Currently, we offer three different themes for our missions:. Reminds us that we are reconciled with ourselves, with our neighbors and with God, and that we are called to be ambassadors of reconciliation in our world today.