I heard] The denunciation of thy horrible judgements upon thy people, so different from those thy ancient deliverances, hath quite dismayed me.
rottennesse entred into my bones] My spirit is gnawen and consumed therewith.
rest in the day of trouble] The faithfull can never have true rest, except they feele before the weight of Gods judgements: they feare before trouble, that they may be quiet when it comes.
invade them] Or, cut them in pieces.