Psalm 149 shows the abrupt change we sometimes have when our proclamations of praise and conception of ourselves as servants of God encounter our inconvenience, defensiveness, and reactivity.
In these linked stories from Jesus's ministry in Jerusalem, we see the message: preaching sacrifice for others while using their sacrifice for your own ends is the opposite of holiness.
Living as the church, being the church, is the way to reconcile ourselves to one another without hypocrisy.
On the second Sunday in Advent, we are reminded that Biblical peace is reconciliation, not quiet. Often, prophecy from unexpected quarters is noisy and disruptive. Just ask Scrooge.