Adam Clarke on Matthew 1:17

Fourteen generations - See the note on Mat 1:11. The Jews had a sort of technical method of summing up generations in this way. In Synopsis Sohar, p. 132, n. 18, we have the following words; "From Abraham to Solomon were fifteen generations; and then the moon was at the full. From Solomon to Zedekiah were other fifteen generations; the moon was then in the wane, and Zedekiah's eyes were put out." That is, the regal state came to its zenith of light and glory in the time of Solomon; but decreased gradually, till it became nearly extinct in the days of Zedekiah. See Schoetgen.