There is such a beautiful Lutheran hymn: There Many Shall Come From the East.
Each stanza ends with: Have mercy on us, O Jesus!
One of my most favorite lines in the hymn, in this pain-filled, trial-filled great tribulation of tears and travail, is this one:
"All trials shall be like a dream that is past."
It is difficult for me to sing the whole stanza #3 without tearing up and even weeping.
All trials shall be like a dream that is past,
Forgotten all trouble and mourning.
All questions and doubts have been answered at last,
When rises the light of that morning.
Have mercy upon us, O Jesus!
O come quickly, Lord Jesus!