Thinking back on the course, on Exodus and Deuteronomy, and on Moses’ prayer in Psalm 90, what does it mean for God to establish the work of our hands?

How does listening to “Charles Ives: Psalm 90” cause you to reflect upon Psalm 90:17, “establish thou the work of our hands”?
Thinking back on the course, on Exodus and Deuteronomy, and on Moses’ prayer in Psalm 90, what does it mean for God to establish the work of our hands?
What does this mean for you individually, and for the wider Christian church?