Zech 4:14 (AMP)
Then said he, These are the two sons of oil [Joshua the high priest and Zerubbabel the prince of Judah, the two anointed ones] who stand before the Lord of the whole earth [as His anointed instruments]. *
Some significant things about Zerubabbel
‘On that day,’ declares the LORD of hosts, ‘I will take you, Zerubabbel, son of Shealtiel, My servant,’ declares the LORD, ‘and I will make you like a signet ring, for I have chosen you,'” declares the LORD of hosts.
The signet ring — a sign of the kings throne, crown, power & authority.
What is so significant about this?? About choosing Zerubbabel??
*** God used these two lines of ancestry for Jesus because He placed a curse on the seed of Jechoniah (also known as Coniah or Jehoiachin) as recorded in Jere 22:30. That line was royal line of David, so if the Messiah was to qualify for the throne of David (Lk 1:31-33), he had to be of the legal line of David, yet not of his seed.
*** Jechoniah was the last legitimate king of Judah and the royal House of David goes through him. His only successor was Zedekiah, his uncle who was appointed not by right, but by an occupying Babylonian ruler (2 Kings 24:17-20). Even at the end of his life, the Babylonians recognized Jechoniah as the legitimate king of Judah (2 Kings 25:27-30))
*** Because Zerubbabel was a descendant of the last legitimate king of Judah, he could be legitimately recognized as the ruler (though not king) of the returning exiles.