The word of the LORD came a second time to Haggai on the twenty-fourth day of the month, "Speak to Zerubbabel, governor of Judah, saying, I am about to shake the heavens and the earth, and to overthrow the throne of kingdoms. I am about to destroy the strength of the kingdoms of the nations, and overthrow the chariots and their riders. And the horses and their riders shall go down, every one by the sword of his brother. On that day, declares the LORD of hosts, I will take you, O Zerubbabel my servant, the son of Shealtiel, declares the LORD, and make you like a signet ring, for I have chosen you, declares the LORD of hosts."   Haggai 2:20-23 (ESV)

In the conclusion of Haggai's prophecy, the LORD declared His two-fold (near and far) plan for Zerubbabel:
- He would "shake the heavens and the earth, and... overthrow the throne of kingdoms... destroy the strength of the kingdoms of the nations," all the powers of the world that oppose His people Judah, where Zerubbabel served as governor.

"On that day" (a phrase in Scripture that usually has cosmic significance) He would preserve Zerubbabel as "a signet ring" (from the Latin signum meaning sign). Zerubbabel would be a sign of the LORD's deliverance from the enemies of His people, in the line of Him to which that sign pointed, the ultimate and eternal Deliverer -- Jesus Christ.
The book of the genealogy of Jesus Christ, the son of David, the son of Abraham.
And after the deportation to Babylon: Jechoniah was the father of Shealtiel, and Shealtiel the father of Zerubbabel, and Zerubbabel the father of Abiud, and Abiud the father of Eliakim, and Eliakim the father of Azor, and Azor the father of Zadok, and Zadok the father of Achim, and Achim the father of Eliud, and Eliud the father of Eleazar, and Eleazar the father of Matthan, and Matthan the father of Jacob, and Jacob the father of Joseph the husband of Mary, of whom Jesus was born, who is called Christ.
Matthew 1:1-16 (ESV)

Jesus, when he began his ministry, was about thirty years of age, being the son (as was supposed) of Joseph, the son of Heli, the son of Matthat, the son of Levi, the son of Melchi, the son of Jannai, the son of Joseph, the son of Mattathias, the son of Amos, the son of Nahum, the son of Esli, the son of Naggai, the son of Maath, the son of Mattathias, the son of Semein, the son of Josech, the son of Joda, the son of Joanan, the son of Rhesa, the son of Zerubbabel, the son of Shealtiel... the son of Abraham, the son of Terah, the son of Nahor, the son of Serug, the son of Reu, the son of Peleg, the son of Eber, the son of Shelah, the son of Cainan, the son of Arphaxad, the son of Shem, the son of Noah, the son of Lamech, the son of Methuselah, the son of Enoch, the son of Jared, the son of Mahalaleel, the son of Cainan, the son of Enos, the son of Seth, the son of Adam, the son of God.   Luke 3:23-38 (ESV)

Amen. Come, Lord Jesus.