If any man is not sure that he is in Christ, he ought not to be easy one moment until he is sure. Dear friend, without the fullest confidence as to your saved condition, you have no right to be at ease, and I pray you may never be so. This is a matter too important to be left undecided.
Charles Haddon Spurgeon (1988). “Spurgeon at His Best: Over 2200 Striking Quotations from the World's Most Exhaustive and Widely-read Sermon Series”, Baker Publishing Group