Ellicott's Commentary for English Readers - Psalms 90:4
(4) A thousand years.—This verse, which, when Peter II. was written (see New Testament Commentary), had already begun to receive an arithmetical treatment, and to be made the basis for Millennarian computations, merely contrasts the unchangeableness and eternity of the Divine existence and purpose with the vicissitudes incident to the brief life of man. To One who is from the infinite past to the infinite future, and Whose purpose runs through the ages, a thousand years are no more than a... read more
Ellicott's Commentary for English Readers - Psalms 90:3
(3) Thou turnest . . .—Probably we must render, Thou turnest man to dust; and sayest, Turn, sons of Adam—i.e., one generation dies and another succeeds (see Psalms 104:29-30), the continuance of the race being regarded as distinctly due to Divine power as the Creation, to which there is probably allusion.The LXX. suggest as the true reading, “Turn not man to dust, but say rather,” &c. read more