Why... ? Figure of speech Asterismos.
by. Some codices, with Aramaean, Syriac, and Vulgate, read "and by", thus completing the Figure of speech Polysyndeton. Compare Jeremiah 27:8.
as. according as.
Related Commentaries of Jeremiah 27:13
Jeremiah 27:13
13 Why will ye die, thou and thy people, by the sword, by the famine, and by the pestilence, as the LORD hath spoken against the nation that will not serve the king of Babylon?