Why did Jesus choose to become a baby born of a mother and father and to spend all but His last years living in an ordinary human family? In part, to reveal God’s plan to make all people live as one “holy family” in His Church (see 2 Corinthians 6:16-18).

In the Holy Family of Jesus, Mary, and Joseph, God reveals our true home. We’re to live as His children, “chosen ones, holy and beloved,” as the First Reading puts it.

On this last Sunday before Christmas, the Church’s Liturgy reveals the true identity of our Redeemer:

He is, as today’s First Reading says, the “ruler...whose origin is from...ancient times.” He will come from Bethlehem, where David was born of Jesse the Ephrathite and anointed king (see Ruth 4:11-17; 1 Samuel 16:1-13; 17:1; Matthew 2:6).

God promised that an heir of David would reign on his throne forever (see 2 Samuel 7:12-13; Psalm 89; Psalm 132:11-12).

The people in today’s Gospel are “filled with expectation.” They believe John the Baptist might be the messiah they’ve been waiting for. Three times we hear their question: “What then should we do?”

The messiah’s coming requires every man and woman to choose—to “repent” or not. That’s John’s message and it will be Jesus’ too (see Luke 3:3; 5:32; 24:47).

Today’s Psalm paints a dreamlike scene—a road filled with liberated captives heading home to Zion (Jerusalem), mouths filled with laughter, tongues rejoicing.

It’s a glorious picture from Israel’s past, a “new exodus,” the deliverance from exile in Babylon. It’s being recalled in a moment of obvious uncertainty and anxiety. But the psalmist isn’t waxing nostalgic.

Every Advent, the Liturgy of the Word gives our sense of time a reorientation. There’s a deliberate tension in the next four weeks’ readings—between promise and fulfillment, expectation and deliverance, between looking forward and looking back.

In today’s First Reading, the prophet Jeremiah focuses our gaze on the promise God made to David, some 1,000 years before Christ. God says through the prophet that He will fulfill this promise by raising up a “just shoot,” a righteous offspring of David, who will rule Israel in justice (see 2 Samuel 7:16; Jeremiah 33:17; Psalm 89:4–5; 27–38).