Yahweh said to Samuel, How long will you mourn for Saul, seeing I have rejected him from being king over Israel? fill your horn with oil, and go: I will send you to Jesse the Bethlehemite; for I have provided me a king among his sons.
The first king of Israel was from Gibeah in Benjamin, but the second was from Bethlehem in Judah.  In the foreknowledge of God, Christ was to be born in Bethlehem; and it was most appropriate that the great O.T. type of Christ should also have been born in Bethlehem, although no mention of that specific detail is made here.  "Bethlehem is the modern Beit Lahm about six miles south-southwest of Jerusalem."[3]