​‘The Protestant tradition values liberty of expression within more general principles of biblical faithfulness..... Broad study of the church’s history of worship should not merely inform us of differing practices but help us to see what is merely preference in a specific context and what are gospel principles needed for every context.’ 

‘The goal is not to tie the congregation to liturgical propriety but, rather, truly to minister the gospel with the elements of the worship service..... The structure of a church’s liturgy also inevitably tells its understanding of the gospel story. This means the worship structures that communicate the gospel are themselves shaped by the gospel.’

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(By 'Bryan Chapell';  From 'Christ-Centered Worship' Pg. 59 & Pg. 89)