Bach did not give the work a title; instead, in the score the four parts of the Latin Mass are each given their own title page—"Kyrie", "Gloria", "Symbolum Nicenum" (otherwise known as the "Credo"), and "Sanctus, Hosanna, Benedictus, Agnus Dei"—and simply bundled together. Indeed, the different sections call for different numbers and arrangements of performers, giving rise to the theory that Bach did not ever expect the work to be performed in its entirety. On the other hand, the parts in the manuscript are numbered from 1 to 4, and Bach's usual closing formula (S.D.G = Soli Deo Gloria) is only found at the end of the Dona Nobis Pacem. Because of its length—nearly two hours of music—it was never performed in its entirety as part of a church liturgy.