We found "we but dimly guess" used in 1 sacred songs, each carrying a unique message of faith.
we but dimly guess
...On this our mount of prayer;
Thou knowest, we but dimly guess,
That day’s long toil, the night’s distress,...
On this our mount of prayer;
Thou knowest, we but dimly guess,
That day’s long toil, the night’s distress,
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