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What is the meaning of אתה אחד ושמך אחד - Hashem is One and His Name is One? What is the difference between Hashem and His Name?

Why is the first of the 10 commandments not phrased as a commandment? 

How do the 10 Maamaros relate to the 10 Dibros? 

How do the two luchos relate to each other?

What is the source of the Rambam that there are עיקרי אמונה?

Why is one of the 13 עיקרים to believe in Moshiach? Why must one anticipate his arrival? 

Why is the first dibra phrased in terms of Yetzias Mitzrayim? Isn't it enough to know that Hashem is the Master of the Universe?

What is the difference between הוי"ה and א-להיך?

WHAT DOES IT MEAN TO BELIEVE IN HASHEM???

This and more - here.

One of the most important shiurim I have ever heard. It provides the very basis for our faith and beings.