Micah 5:2 (New International Version)
2 "But you, Bethlehem Ephrathah,
though you are small among the clans of Judah,
out of you will come for me
one who will be ruler over Israel,
whose origins are from of old,
from ancient times."
I'm reading 1 Samuel at the moment, where Samuel, following God's instructions, visits Jesse of Bethlehem because God has chosen one of his sons to be king (1 Samuel 16).
Seven of Jesse's fine sons come before Samuel, but none of them is the one God has chosen.
"The one" is out on the hills with the sheep, the youngest son, David, not even considered; least likely to be chosen. But God chose him.
God seems to delight in using the least likely, coming to the most unexpected places; "Bethlehem Ephrathah, small among the clans of Judah."
David, the shepherd king, is a foreshadowing of the Shepherd King to come, spoken of by the prophet Micah who faithfully recorded words he could not explain. A king was to come, but had somehow existed long before. Looking back through the lens of history his prophesy makes sense.
Least things; weak, small things. God can use anything. I'm glad because then he can use even me.
1 Corinthians 1:27-29 (New International Version)
27 But God chose the foolish things of the world to shame the wise; God chose the weak things of the world to shame the strong. 28 He chose the lowly things of this world and the despised things—and the things that are not—to nullify the things that are, 29 so that no one may boast before him.