I have seen alternate Old Testament readings in the Revised Common Lectionary resources of other denominations. Why are these not provided on the PC(USA) website?
During the period of Ordinary Time that follows the Day of Pentecost, the Revised Common Lectionary published by the Consultation on Common Texts provides two parallel lectionary tracks: the complementary (in which the reading from the Old Testament is thematically tied to the Gospel lesson) and the semicontinuous (which allows for a more sequential reading through the major stories and themes of certain biblical books). Historically, churches of the Reformed tradition, including the Presbyterian Church (U.S.A.), have preferred the latter option, seeking to hear and preach the narratives of the Hebrew Scriptures in their biblical context. Our Web site reflects that tradition, consistent with the other published liturgical resources of the PC(USA), including the Book of Common Worship, the Mission Yearbook for Prayer and Study, the Presbyterian Planning Calendar and the Daybook of the Company of Pastors.