And thou Bethlehem, land of Judah, Art in no wise least among the princes of Judah: For out of thee shall come forth a governor, Who shall be shepherd of my people Israel.

So, all the generations from Abraham to David were fourteen; from [the time of] King David to the people [of Judah] being taken away to Babylon were [approximately] fourteen generations and from [Judah] being taken away to Babylon to [the time of] Christ were [approximately] fourteen generations.