The Hebrew did tell us what his name was you just can't see it in the English translation. What I refer to him as depends on who I am talking to, when I am talking to him it is Father. when I am talking to someone else it is Yahvah or short Yah. But there are titles also he is El of the Elohim (Sons of El), When we say God, it is a English translation of the Hebrew word Elohim. In other words when the English says the LORD thy God in Hebrew it is Yhavah your Elohim.