John Trapp on Isaiah 51:19

Ver. 19. Theſe two things are come unto thee] As they ſeldome are ſeparated: as ſome write of the Aſp that he never wanders alone, without his companion.

Who ſhall be ſorry for thee] Condole and comfort thee.

Deſolation and deſtruction, and the famine and the ſword] i. e. Deſolation by famine and deſtruction by the ſword: or, as ſome will have it, deſolation by famine and ſword, and want of conſolation, as ver. 18.

By whom ſhall I comfort thee?] By whom but by my ſelf, when thou art at thy greateſt under, and even forſaken of thy hopes. See ver. 12.