Thank you, Michael! I had been wracking my brain about this - you would think I would have figured it out since 1840 is possibly my favorite storyline, and I watched it again this past Spring! I had also done a google search on "Trask Chapel" and DS, but didn't come up with the answer then, either.
I found my notes regarding Daphne Harridge Collins' funeral in 1841, with the Bible verses read by Catherine Harridge Collins, which I then googled. Not sure which translation they used since none of those that come up in an Internet search precisely match.
"There are many who say, 'O that we might see some good!
Lift up the light of thy countenance upon us, O LORD!"
Thou hast put more joy in my heart
than they have when their grain and wine abound.
In peace I will both lie down and sleep;
for thou alone, O LORD, makest me dwell in safety."
(Psalm 4:6-8)
As recited by Lara Parker, it sounded like a dirge - though that may have been appropriate given the circumstances.