Alexander Maclaren said this quote

No wise forward look can ignore the possibility of many sorrows and the certainty of some. Hope has ever something of dread in her eyes. The road will not be always bright and smooth, but will sometimes plunge down into grim cations, where no sunbeams reach. But even that anticipation may be calm. Thou art with me is enough. He who guides into the gorge will guide through it. It is not a cul de sac, shut in with precipices, at the far end; but it opens out on shining tablelands, where there is greener pasture.