Liturgy, as Gospel gift, comes without compulsion or it doesn't come as itself at all.
Liturgy is better prayed than argued.
Liturgy cannot be explained from the outside - you have to live in its house to understand why it is loved.
Liturgy manifests in a short period of time what the royal priesthood of the Baptized is called to live at all times and in all places (or said another way, the inside of this house is bigger than all the world outside, because all the world outside is already inside).
Liturgy is not primarily about text but ordered action and the action is not primarily ours but God's (only ours in the "bounce back").
Liturgy at its heart is simply the prayed confession of the Church, so what confession is being prayed gives the goods on exactly whose liturgy it is.