Into thine hand I commit my spirit. Our Lord's adoption of these words, and application of them to himself and his own departure from earth, have given them a special sacredness beyond that which attaches to Scripture generally.
At the same time, they have impressed on them a new meaning, since David was not thinking of a final committal of his soul, as distinct from his body, into the hands of the Creator, but only intended solemnly to commit himself, both soul and body, into the Divine keeping, to be preserved from the attacks of his enemies.
Thou hast redeemed me, O Lord God of truth; or, thou hast delivered me, O Lord God of truth. It is redemption in the general sense of "deliverance from peril," not redemption from sin, of which the psalmist speaks.
David, having frequently experienced such deliverance in the past, is emboldened to expect now another deliverance.