"Glory to the Father, and to the Son, and to the Holy Spirit, As it was in the beginning, is now, and ever shall be, world without end. Amen.” This ancient hymn captures three eras of worship: as it was in the beginning—the worship of Old Testament Israel, as it is now—the worship of New Testament Christianity, and worship in the world without end—the worship of heaven. In one sense separating worship into these three eras emphasizes their discontinuity; yet, while there are certainly discontinuities between the worship of Israel and the New Testament church, for example, there are also important continuities, and where we find an emphasis on the continuity is in that little phrase, “and ever shall be.” Yet Christians have long wrestled with the continuities and discontinuities of worship, and confusion in this area has often led to problems with theology and practice of worship. The solution is found in a proper understanding of the foundations of biblical worship. Understanding properly how worship as it was in the beginning and worship as it is now relate to worship in the world without end helps us to recognize what shall ever be, the center of true worship and, consequently, the purpose of what we do as we gather for worship now. Scripture presents us with two extended descriptions of the worship of the world without end that provide the foundation for our discussion, notably one set in the context of worship in the Old Testament and the other set in the context of worship in the New Testament. In both cases, these descriptions of heavenly worship were presented during a time of problems with earthly worship, revealing the fact that problems with our worship now are corrected when we bring our worship into proper relationship with the worship of the world without end.