For my life is spent with grief, and my years with
sighing,
&c.] Which shows the continuance of his troubles, and that
his whole life had been, as it were, an uninterrupted series of
sorrows;
my strength faileth because of mine iniquity;
this opens the source and spring of all his grief and trouble;
his sin, and the sin of his nature, in which he was conceived and
born; indwelling sin, which remained and worked in him; and it
may be also the sin of unbelief, which beset him, and prevailed
in him, notwithstanding the instances of divine goodness, the
declarations of grace, the discoveries of love, and the exceeding
great and precious promises he had made to him; as also his daily
sins and infirmities, and very likely some great backslidings,
which had brought grief of soul upon aim, and which grief
affected the several parts of his body. Sin was the cause of the
failure of natural strength in Adam and his posterity; of
diseases and death, by which their strength is weakened in the
way; and was the cause of impairing moral strength in men to do
that which is good, and has a very great influence on the
spiritual strength of the Lord's people, in the exercise of
grace;
and my bones are consumed;
which are the firmest and strongest parts of the human body, and
the support of it.