Psalms 90:4 - Clarke's commentary and critical notes on the Bible

For a thousand years in thy sight are but as yesterday when it is past, and as a watch in the night. For a thousand years in thy sight - As if he had said, Though the resurrection of the body may be a thousand (or any indefinite number of) years distant; yet, when these are past, they are but as yesterday, or a single thatch of the night. They pass through the mind in a moment, and appear no longer in their duration than the time required by the mind to reflect them by thought. But, short as they appear to the eye of the mind, they are nothing when compared with the eternity of God! The author probably has in view also that economy of Divine justice and providence by which the life of man has been shortened from one thousand years to threescore years and ten, or fourscore.