Sin lies at your door; and though its urge is toward you, you must master it. TAIGA

"To sin wilfully is to crucify the Son of God anew! Can you bear that responsibility? It might be impossible for you to be brought back to repentance; you should be wise and turn completely away from the sin before you. If you commit it, it might very well be the end!"
This book can help you reconsider the seriousness of sin in order to make progress on the path of sanctification that Christ, through His death, acquired for you.