“The watch is long betimes and late, The prize is slow to win.”
The devotional poem acknowledges prolonged waiting and delayed fulfillment directly, making patience meaningful precisely because the hoped-for result is slow.
Source note: “Advent,” in the devotional section of Goblin Market and Other Poems; Project Gutenberg #16950. The watch is explicitly Christian expectation of Christ, not a secular promise that persistence guarantees a prize.