This chapter traces the various ways in which the cultic language and imagery of the Hebrew Scriptures influenced and shaped the liturgical thought and ritual practices of early Christianity, from the first to the fourth century ce. At first, this was primarily through the metaphorical or spiritual application of such concepts as priesthood and sacrifice, but eventually there are indications of the beginnings of the adoption of a more literal correspondence between some elements of the Temple cult and aspects of Christian worship. Both corporate and individual practices of prayer are covered, including the use of the canonical psalms, as well as the appropriation of traditional ritual gestures and the emergence of Christian holy days out of biblical festivals.