I ask a 50 year old pastor, Can you please tell me what is the name of our God? he said Jesus Christ I open verse John 13 13 "You call me your master and lord, and it's true that is who I am" word here is Kyrios(lord) not Theos(God), if you Read the Gospel you'll find Jesus never Use name of any God in his pray not (Yhwh) not (Jehovah) no any other old testament name of God, word he only use is (ABBA) FATHER, example your father give you a name, but son cannot give a name to his father, Moral of the story Our God the Father Is not in the old testament, if anyone have any question feel free to ask.