In Christian liturgy, "the Pax" is an abbreviation of the Latin salutations "pax vobis" or "pax vobiscum", which are used in the Catholic Mass, the Lutheran Divine Service, and the Western Orthodox Mass.

The Divine Service is a title given to the Eucharistic liturgy as used in the various Lutheran churches. It has its roots in the Pre-Tridentine Mass as revised by Martin Luther in his Formula missae of 1523 and his Deutsche Messe of 1526. It was further developed through the Kirchenordnungen of the sixteenth and seventeenth centuries that followed in Luther's tradition.