If this doesn’t make you really glad that your name is written in the Lamb’s Book of Life, I don’t know what will.
“[Men] think because God does not speak to them by his loud judgments, therefore God does not know their sins … ‘They consider not in their heart that I remember all their wickedness’ (Hosea 7:2) … Every lie a sinner tells, every oath he swears, every drunken bout, God writes it down in his books of remembrance; and woe to him if the book is not crossed out with the blood of Christ! See the mercifulness of God to his children, who blots their sins out of his book of remembrance, and writes their good deeds in his book of remembrance: ‘I, even I, am he that blotteth out thy transgressions’ (Isaiah 43:25) … Oh, the heavenly indulgence and kindness of God to his people! He remembers everything but their sins.”
– Thomas Watson, “The Great Gain of Godliness”
You can read the whole thing here.