This sermon was built around the readings for Proper 27 in Year B of the Revised Common Lectionary. You can find those readings here http://www.lectionarypage.net/YearB_RCL/Pentecost/BProp27_RCL.html The Renewal of Baptismal Vows can be found in the Book of Common Prayer, page 292, as...
suitable for providing readers used to encountering the Scripture in pericope-length chunks (whether from the Eucharistic lectionary or the Daily Office one) a big picture view of the NT. I