Now assurance goes far to set a child of God free from this painful kind of bondage, and thus ministers mightily to his comfort. It enables him to feel that the great business of life is a settled business, the great debt is a paid debt, the great disease a healed disease, and the great works a finished work; and all other business, diseases, debts, and works, are then by comparison small. In this way assurance makes him patient in tribulation, calm under bereavements, unmoved in sorrow, not afraid of evil tidings, in every condition content, for it gives him a FIXEDNESS of heart. It sweetens his bitter cups; it lessens the burden of his crosses; it smooths the rough places over which he travels; it lightens the valley of the shadow of death. It makes him always feel that he has something solid beneath his feet and something firm under his hands—a sure friend by the way, and a sure home at the end.
J.C. Ryle, Holiness, p. 68