(9-11) This piece may be compared with Psalm 41:6-8. The formal "saying" (Psalm 71:11), introducing a quotation, is an indication of a late date, the early literature employing no signs of quotation. (See, e.g., Psalm 68:12; Psalm 68:26.)

Verse 9. - Cast me not off in the lime of old age. This expression, combined with the allusion to old age and grey hairs in ver. 18, indicates that the writer was drawing near to the natural term of human life, and already felt the infirmities of old age creeping upon him. This note of date suits better the time of Adonijah's rebellion than that of Absalom's. Forsake me not when my strength faileth. An appeal to the Divine compassion. If God was his "Rock and Fortress" (ver. 3), his "strong Refuge" (ver. 7), when he was in his full vigour, much more will he support and befriend him when be is weak and helpless.

71:1-13 David prays that he might never be made ashamed of dependence upon God. With this petition every true believer may come boldly to the throne of grace. The gracious care of Divine providence in our birth and infancy, should engage us to early piety. He that was our Help from our birth, ought to be our Hope from our youth. Let none expect ease or comfort from the world. Those who love the Lord, often are hated and persecuted; men wondered at for their principles and conduct; but the Lord has been their strong refuge. The faithful servants of God may be assured that he will not cast them off in old age, nor forsake them when their strength fails.Cast me not off in the time of old age,.... The Lord never casts off nor casts away his people, whom he foreknew; they are near unto him; they are on his heart, and are engraven on the palms of his hands; and they shall never be removed from his heart's love, nor out of his arms, nor out of his covenant, and shall always be the objects of his care: he bears and carries them to old age, and even to hoary hairs: the Lord had been the guide of David's youth, and his trust then, Psalm 71:5; and now he desires he would be the staff of his old age; at which age he was when Absalom rebelled against him;

forsake me not when my strength faileth: as it does when old age comes on; then the keepers of the house tremble, and the strong men bow themselves, and especially at death, when flesh and heart fail; but God will never forsake his people, neither in youth nor in old age, neither in life nor at death.