“O Faithful, indefatigable tides”

O faithful, indefatigable tides,
That evermore upon God's errands go,--
Now seaward bearing tidings of the land,--
Now landward bearing tidings of the sea,--
And filling every frith and estuary,
Each arm of the great sea, each little creek,
Each thread and filament of water-courses,
Full with your ministration of delight!
Under the rafters of this wooden bridge
I see you come and go; sometimes in haste
To reach your journey's end, which being done
With feet unrested ye return again
And recommence the never-ending task;
Patient, whatever burdens ye may bear,
And fretted only by the impeding rocks.