John Gill Commentary Deuteronomy 28:67

"In the morning thou shalt say, Would it were even! and at even thou shalt say, Would it were morning! for the fear of thy heart which thou shalt fear, and for the sight of thine eyes which thou shalt see." — Deuteronomy 28:67 (ASV)

In the morning you shall say, would God it were even
Wishing they might get through the day well, fearing their life would be taken away before night, or some sad calamity befall them before the day was past:

and at even you shall say, would God it were morning ;
dreading what would happen to them in the night, that some messenger of death would be sent to dispatch them, or they should be haled out of bed to a court of inquisition, and cast into a dungeon:

for the fear of your heart wherewith you shall fear, and for the
sight of your eyes which, you shall see ;
often beholding such dreadful sights, as their countrymen put upon the rack, and cruelly tortured, and then burnt alive; and so their hearts would fear and tremble, lest they should be the next that would be taken up and used in this manner; besides other severities and hard usages, with which their brethren were treated, and they in continual fear of.