Quran, the blade of Islam

Had the God of the Quran been the Lord of all creatures, and been Merciful and kind to all, he would never have commanded the Mohammedans to slaughter men of other faiths, and animals, etc. If he is Merciful, will he show mercy even to the sinners? If the answer be given in the affirmative, it cannot be true, because further on it is said in the Quran "Put infidels to sword," in other words, he that does not believe in the Quran and the Prophet Mohammad is an infidel (he should, therefore, be put to death). Since the Quran sanctions such cruelty to non-Mohammedans and innocent creatures such as cows it can never be the Word of God- Dayanand