The writer of Psalm 90 suggests that anything beyond 70 is an exception to the rule. The psalmist wanted his readers to see how short our time on earth is in contrast to eternity. It's to number our days. It's to make sure of our salvation through faith in Christ and to live each day for Him. Don't miss everlasting life by assuming that even the longest life gives you plenty of time to prepare for eternity.
Today is the day of salvation.
What we weave in time we will wear in eternity.