Genesis 25:8

8.Then Abraham gave up the ghost (20) They are mistaken who suppose that this expression denotes sudden death, as intimating that he had not been worn out by long disease, but expired without pain. Moses rather means to say that the father of the faithful was not exempt from the common lot of men, in order that our minds may not languish when the outward man is perishing; but that, by meditating on that renovation which is laid up as the object of our hope, we may, with tranquil minds, suffer this frail tabernacle to be dissolved. There is therefore no reason why a feeble, emaciated body, failing eyes, tremulous hands, and the lost use of all our members, should so dishearten us, that we should not hasten, after the example of our father, with joy and alacrity to our death. But although Abraham had this in common with the human race, that he grew old and died; yet Moses, shortly afterwards, puts a difference between him and the promiscuous multitude of men as to manner of dying; namely, that he should die in a good old age, and satisfied with life. Unbelievers, indeed, often seem to participate in the same blessing; yea, David complains that they excelled in this kind of privilege; and a similar complaint occurs in the book of Job, namely, that they fill up their time happily, till in a moment they descend into the grave. (21) But what I said before must be remembered, that the chief part of a good old age consists in a good conscience and in a serene and tranquil mind. Whence it follows, that what God promises to Abraham, can only apply to those who truly cultivate righteousness: for Plato says, with equal truth and wisdom, that a good hope is the nutriment of old age; and therefore old men who have a guilty conscience are miserably tormented, and are inwardly racked as by a perpetual torture. But to this we must add, what Plato knew not, that it is godliness which causes a good old age to attend us even to the grave, because faith is the preserver of a tranquil mind. To the same point belongs what is immediately added, he was full of days, so that he did not desire a prolongation of life. We see how many are in bondage to the desire of life; yea, nearly the whole world languishes between a weariness of the present life and an inexplicable desire for its continuance. That satiety of life, therefore, which shall cause us to be ready to leave it, is a singular favor from God.

And was gathered to his people. I gladly embrace the opinion of those who believe the state of our future life to be pointed out in this form of expression; provided we do not restrict it, as these expositors do, to the faithful only; but understand by it that mankind are associated together in death as well as in life. (22) It may seem absurd to profane men, for David to say, that the reprobate are gathered together like sheep into the grave; but if we examine the expression more closely, this gathering together will have no existence if their souls are annihilated. (23) The mention of Abraham’s burial will presently follow. Now he is said to be gathered to his fathers, which would be inconsistent with fact if human life vanished, and men were reduced to annihilation: wherefore the Scripture, in speaking thus, shows that another state of life remains after death, so that a departure out of the world is not the destruction of the whole man.