Toungue in cheek, like Rabbie Burns---"He tried His 'prentice haund on man---and then He made the Lasses!"
   Ribaldry aside, if My God was ever known in the Old Testament, it was never mentioned in the writings there. I found some marvellous scripture in the O.T.---Proverbs, Song of Solomon are but two examples, ---but I also found some air-headed balderdash about the Earth being mass-produced in six days, Adam and his spare rib, Charlton Heston talking to a burning bush and reappearing with Ten Commandments all neatly sculpted from "tablets of Stone" [was that before or after the Red Sea suddenly dried up just exactly where Moses and his friends needed to keep their feet dry?], Noah and his ark, Lot's wife, and the poor guys who can't "enter the congregation of the Lord" because of some injury to their goolies.
And a multitude of pointless "begats". Pointless, at least to anything other than Hebrew history, pure and simple.
The True God got the first emphatic mention in the voice of the Baptist, who saw in Jesus of Nazareth the personification of pure Love.
   He proclaimed the identity of our God then and there. And both John and Jesus died in misery and degradation. I don't think either would approve of Mike's view of Christianity----"Be our kind of Christian, or you'll burn in Hell!" A faith that depends for its existence on direct threats or promise of material reward is no kind of faith at all.