The name of God, the Tetragrammation (four letters) is given in Exodus 3. It's not a generic title like the English word God, which is closer in meaning to the Hebrew Elohim. It's given to us through Moses as the name we shall call him by forever. A short form, Yah, is often used as well and forms part of many Hebrew names, like Joshua (the Jo is just a transliteration because English letters don't match exactly with Hebrew ones) just as El does in others, such as Daniel. There are also many other names of God, such as El Elyon, El Shaddai, Jehovah Jireh, Elohim Sabaoth (God Most High, God the Provider, God of the Armies of Heaven). For those who don't know, Hebrew was written in all consonants, and at the time it was written down there were no vowel points or cantillation marks which are added to aid in pronunciation. But to me, the most important thing about the name of God is the context it is given in. In Moses' encounter with the burning bush, both before and after God reveals his name, God tells Moses that he hears the cries of his people, he sees their troubles (I'm paraphrasing), and he has come down to deliver them. It is not hard to see that the message of who he is, his identity, includes those characteristics.