LORD, make me to know my end, and the measure of my days, what it is; that I may know how frail I am.
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Augustine of Hippo
AD 430
"Lord, make me to know mine end" (ver. 4). For some things I have passed by already; and I have arrived at a certain point, and that to which I have arrived is better than that from which I have advanced to this; but yet there remains a point, which has to be left behind. For we are not to remain here, where there are trials, offences, where we have to bear with persons who listen to us and cavil at us. "Make me to know mine end;" the end, from which I am still removed, not the course which is already before me.
6. The "end" he speaks of, is that which the Apostle fixed his eye upon, in his course; and made confession of his own infirmity, perceiving in himself a different state of things from that which he looked for elsewhere. For he says, "Not that I have already attained, or am already perfect. Brethren, I count not myself to have apprehended." And that you might not say, "If the Apostle hath not apprehended, have I apprehended? If the Apostle is not perfect, am I perfect?"...
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End, as I desire to die, like Elias, 3 Kings xix. (Worthington)
The just have frequently expressed such sentiments, to move God to pity, (Job vii. 1., and Psalm ci. 4.) though they wished to live, that they might praise God on earth, (Calmet) if it were his will. (Haydock)
This text may indicate the impatience (Berthier) of the mere philosopher, (Haydock) or David desires to know to what a decree of perfection he must arrive. (Origen; St. Ambrose)