Job 29:18 - Matthew Poole's English Annotations on the Holy Bible

Then I said, i.e. I persuaded myself, being thus strongly fortified with the conscience of my own universal integrity, and with the singular favour of God, and of all men. But although this was sometimes Job's opinion, yet at other times he was subject to fears, and expectation of changes, as appears from Job 3:25,26. I shall die in my nest; not a violent or untimely, but a natural, and peaceable, and seasonable death, sweetly expiring in my own bed and habitation, in the midst of my children and friends, leaving the precious perfume of a good name behind me, and a plentiful inheritance to all my posterity. As the sand; which is innumerable. See Genesis 22:17, Genesis 41:49.