Many of you have been sorely wearied with going your way to find peace. Some of you tried ceremonies, and trusted in them, and the priest came to your help; but he mocked your heart’s distress. Others of you sought by various systems of thought to come to an anchorage; but, tossed from billow to billow, you found no rest upon the seething sea of speculation. More of you tried by your good works to gain rest to your consciences. You multiplied your prayers, you poured out floods of tears, you hoped, by almsgiving and by the like, that some merit might accrue to you, and that your heart might feel acceptance with God, and so have rest. You toiled and toiled, like the men that were in the vessel with Jonah when they rowed hard to bring their ship to land, but could not, for the sea wrought and was tempestuous. There was no escape for you that way, and so you were driven to another way, even to rest in Jesus. My heart looks back to the time when I was under a sense of sin, and sought with all my soul to find peace, but could not discover it, high or low, in any place beneath the sky; yet when “I saw one hanging on a tree,” as the Substitute for sin, then my heart sat down under His shadow with great delight. My heart reasoned thus with herself, Did Jesus suffer in my stead? Then I shall not suffer. Did He bear my sin? Then I do not bear it. Did God accept His Son as my Substitute? Then He will never smite me. Was Jesus acceptable with God as my Sacrifice? Then what contents the Lord may well enough content me, and so I will go no farther, but: “sit down under His shadow,” and enjoy a delightful rest.

Spurgeon, Til He Comes: Communion Meditations and Addresses.