And I will give them one heart, and a new spirit I will put within them. I will remove the heart of stone from their flesh and give them a heart of flesh, that they may walk in my statutes and keep my rules and obey them. And they shall be my people, and I will be their God.

— Ezekiel 11:19-20

Charles Spurgeon, the great preacher from the 19th century was saved when he was 16. His recounting of how it came to be is good to remember for all of us:

I can recall the very day and hour when I first received those truths (of election and effectual calling) in my own soul—when they were, as John Bunyan says, burnt into my heart as with a hot iron, and I can recollect how I felt that I had grown on a sudden from a babe into a man—that I had made progress in Scriptural knowledge, through having found, once for all, the clue to the truth of God.

One week-night when I was sitting in the house of God, I was not thinking much about the preacher’s sermon, for I did not believe it. The thought struck me, “How did you come to be a Christian?” I sought the Lord. “But how did you come to seek the Lord?” The truth flashed across my mind in a moment—I should not have sought him unless there had been some previous influence in my mind to make me seek him. I prayed, thought I, but then I asked myself, How came I to pray? I was induced to pray by reading the Scriptures. How came I to read the Scriptures? I did read them, but what led me to do so? Then, in a moment, I saw that God was at the bottom of it all, and that he was the Author of my faith, and so the whole doctrine of grace opened up to me, and from that doctrine I have not departed to this day, and I desire to make this my constant confession, “I ascribe my change wholly to God.”