Thus says the Lord GOD: And suddenly there will come to the temple the LORD whom you seek. And the messenger of the covenant whom you desire. Yes, he is coming, says the LORD of hosts. (Mal 3:1-4, 23-24)
https://bible.usccb.org/bible/readings/122323.cfm
Our waiting is almost over. Tomorrow will be a busy day in every parish, in every home, Sunday AND Christmas Eve. May the Lord find us watching and waiting to receive Him with joy! O Emmanuel, our King and Giver of Law: come to save us, Lord our God!