Our worship of God, our liturgy, is part of the church's mission. It is not merely, for example, a means to evangelise. The five-fold mission statement, agreed to by the Anglican Consultative Council, is good but inadequate. Here is an open letter to the Archbishop of Canterbury and the Anglican Consultative Council seeking that the mission statement be revised to explicitly include worship/liturgy: http://liturgy.co.nz/open-letter-to-acc15/11822