God's Word can be divided into the commands and the promises, or the Law and the Gospel. Law is God's demand for righteousness and Gospel is the good news of God gift of righteousness through Christ. The Psalmist's celebration of this in Psalm 18 is accompanied by the "Missa Breva" of Lutheran tradition the Kyrie and Gloria in Excelsis, and the Rite of Holy Communion. The hymn "God of Grace and God of Glory" completes this offering.