The writer started his book by stating a very important fact which is that Islam, its belief, acts of worship, transactions and teachings, Then, the book discusses the basic principles of Islam.
The Mercy of God .. That Mercy, which encompassed everything, It is out God's mercy on you that he allowed you to reach us, read about him, and learn more about Islam.
In the Arabic original, the author gives his book the title Sabighat, borrowing the Quranic description of the coats of mail Prophet David used to make for his soldiers. In its linguistic sense, the word means ‘of good length, full covering, etc.’ The implied sense is that those coats gave proper protection. Hence, the reference in this forwards to the coats of mail as giving protection against misconception.