Charles H. Spurgeon on Psalms 32:1

Blessed is the man, saith David, whose sins are pardoned, where he maketh remission of sins to be true felicity. Now there is no true felicity but that which is enjoyed, and felicity cannot be enjoyed unless it be felt; and it cannot be felt unless a man know himself to be in possession of it; and a man cannot know himself to be in possession of it, if he doubt whether he hath it or not; and therefore this doubting of the remission of sins is contrary to true felicity, and is nothing else but a torment of the conscience. For a man cannot doubt whether his sins be pardoned or not, but straightway, if his conscience be not seared with a hot iron, the very thought of his sin will strike a great fear into him; for the fear of eternal death, and the horror of God's judgment will come to his remembrance, the consideration of which is most terrible. William Perkins.